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REFILE-South Africa suspends use of Land Bank debt as collateral after default

South Africa's central bank has temporarily prohibited the use of debt issued by the Land Bank as collateral after the state agricultural lender was downgraded deeper into junk status and missed $2.7 billion in loan repayments.




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Roy Horn of Las Vegas magic duo Siegfried and Roy dies of COVID-19: report

Magician Roy Horn, who alongside Siegfried Fischbacher starred in a popular, long-running Las Vegas act built around rare tigers, died on Friday from of complications of COVID-19, the Las Vegas Review-Journal newspaper reported. He was 75.




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Africans scale back funerals to curb COVID-19

Across Africa, centuries-old cultural traditions are being foregone in the wake of the COVID-19 pandemic, which has seen governments impose restrictions on gatherings and other practices around death and burial. Francesca Lynagh reports.




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The science of how 'wok hei' makes stir-fried food taste so good

Getting your wok scorching hot and preparing your ingredients in advance is the best way to make a tasty stir-fry, says Sam Wong




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Africa Now: Senegal’s startup scene

Senegal is quickly becoming a tech hub leader in Francophone West Africa, having raised $22 million in investments for tech and digital companies in 2018, according to Partech, a global investment platform. However, the business ecosystem in the region remains beset by a critical funding gap.




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Recalled Cucumbers in Your Fridge?

Title: Recalled Cucumbers in Your Fridge?
Category: Health News
Created: 4/26/2011 1:54:00 PM
Last Editorial Review: 4/27/2011 12:00:00 AM




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Switch From U.S. to African Diet May Lower Colon Cancer Risk in Blacks

Title: Switch From U.S. to African Diet May Lower Colon Cancer Risk in Blacks
Category: Health News
Created: 4/28/2015 12:00:00 AM
Last Editorial Review: 4/29/2015 12:00:00 AM




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U.S. Toddlers Eat More French Fries Than Vegetables

Title: U.S. Toddlers Eat More French Fries Than Vegetables
Category: Health News
Created: 5/1/2017 12:00:00 AM
Last Editorial Review: 5/1/2017 12:00:00 AM




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AHA News: Firefighter In Need of a New Heart Got By With a Little Help From His Friends

Title: AHA News: Firefighter In Need of a New Heart Got By With a Little Help From His Friends
Category: Health News
Created: 4/24/2020 12:00:00 AM
Last Editorial Review: 4/27/2020 12:00:00 AM




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Especially in the Young, Cholesterol Is No Friend to the Heart

Title: Especially in the Young, Cholesterol Is No Friend to the Heart
Category: Health News
Created: 12/4/2019 12:00:00 AM
Last Editorial Review: 12/4/2019 12:00:00 AM




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AHA News: Being an African American 'Superwoman' Might Come With a Price

Title: AHA News: Being an African American 'Superwoman' Might Come With a Price
Category: Health News
Created: 2/11/2020 12:00:00 AM
Last Editorial Review: 2/12/2020 12:00:00 AM




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Neurologic outcomes in Friedreich ataxia: Study of a single-site cohort

Objective

To investigate the pattern of progression of neurologic impairment in Friedreich ataxia (FRDA) and identify patients with fast disease progression as detected by clinical rating scales.

Methods

Clinical, demographic, and genetic data were analyzed from 54 patients with FRDA included at the Brussels site of the European Friedreich's Ataxia Consortium for Translational Studies, with an average prospective follow-up of 4 years.

Results

Afferent ataxia predated other features of FRDA, followed by cerebellar ataxia and pyramidal weakness. The Scale for the Assessment and Rating of Ataxia (SARA) best detected progression in ambulatory patients and in the first 20 years of disease duration but did not effectively capture progression in advanced disease. Dysarthria, sitting, and upper limb coordination items kept worsening after loss of ambulation. Eighty percent of patients needing support to walk lost ambulation within 2 years. Age at onset had a strong influence on progression of neurologic and functional deficits, which was maximal in patients with symptom onset before age 8 years. All these patients became unable to walk by 15 years after onset, significantly earlier than patients with later onset. Progression in the previous 1 or 2 years was not predictive of progression in the subsequent year.

Conclusions

The SARA is a sensitive outcome measure in ambulatory patients with FRDA and has an excellent correlation with functional capabilities. Ambulatory patients with onset before age 8 years showed the fastest measurable worsening. Loss of ambulation in high-risk patients is a disease milestone that should be considered as an end point in clinical trials.




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Breastfeeding and Mortality Under 2 Years of Age in Sub-Saharan Africa

BACKGROUND:

Several studies have investigated the association of breastfeeding status with offspring mortality in Africa, but most studies were from one center only or had limited statistical power to draw robust conclusions.

METHODS:

Data came from 75 nationally representative cross-sectional Demographic and Health Surveys in 35 countries in sub-Saharan Africa conducted between 2000 and 2016. Our study relied on 217 112 individuals aged 4 days to 23 months for breastfeeding pattern analysis, 161 322 individuals aged 6 to 23 months for breastfeeding history analysis, and 104 427 individuals aged 12 to 23 months for breastfeeding duration analysis.

RESULTS:

Compared with children aged 4 days to 23 months exclusively breastfed in the first 3 days of life, those not breastfed had a high risk of mortality at <2 years of age (odds ratio [OR] = 13.45; 95% confidence interval [CI] = 11.43–15.83). Young children who were predominantly breastfed or partially breastfed had moderately increased risk of mortality at <2 years of age (OR = 1.11, 95% CI = 1.03–1.21 for predominant pattern; OR = 1.12, 95% CI = 0.99–1.27 for partial pattern). Compared with children aged 6 to 23 months who were breastfed within the first 6 months of life, those not breastfed had a high risk of mortality (OR = 5.65; 95% CI = 4.27–7.47). Compared with children aged 12 to 23 months who were breastfed for ≥6 months, those who were breastfed for shorter periods had a higher risk of mortality (OR = 2.78, 95% CI = 1.45–5.32 for duration of <3 months; OR = 5.28, 95% CI = 3.24–8.61 for those who were not breastfed).

CONCLUSIONS:

Our findings support exclusive breastfeeding during the first 6 months of life and continued breastfeeding up to 2 years of age recommended by the World Health Organization for reducing mortality of children <2 years old in sub-Saharan Africa.




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A Novel Variation in the FRIZZLE PANICLE (FZP) Gene Promoter Improves Grain Number and Yield in Rice [Genetics of Complex Traits]

Secondary branch number per panicle plays a crucial role in regulating grain number and yield in rice. Here, we report the positional cloning and functional characterization for SECONDARY BRANCH NUMBER7 (qSBN7), a quantitative trait locus affecting secondary branch per panicle and grain number. Our research revealed that the causative variants of qSBN7 are located in the distal promoter region of FRIZZLE PANICLE (FZP), a gene previously associated with the repression of axillary meristem development in rice spikelets. qSBN7 is a novel allele of FZP that causes an ~56% decrease in its transcriptional level, leading to increased secondary branch and grain number, and reduced grain length. Field evaluations showed that qSBN7 increased grain yield by 10.9% in a temperate japonica variety, TN13, likely due to its positive effect on sink capacity. Our findings suggest that incorporation of qSBN7 can increase yield potential and improve the breeding of elite rice varieties.




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Crystal Structure of African Swine Fever Virus pS273R Protease and Implications for Inhibitor Design [Structure and Assembly]

African swine fever (ASF) is a highly contagious hemorrhagic viral disease of domestic and wild pigs that is responsible for serious economic and production losses. It is caused by the African swine fever virus (ASFV), a large and complex icosahedral DNA virus of the Asfarviridae family. Currently, there is no effective treatment or approved vaccine against the ASFV. pS273R, a specific SUMO-1 cysteine protease, catalyzes the maturation of the pp220 and pp62 polyprotein precursors into core-shell proteins. Here, we present the crystal structure of the ASFV pS273R protease at a resolution of 2.3 Å. The overall structure of the pS273R protease is represented by two domains named the "core domain" and the N-terminal "arm domain." The "arm domain" contains the residues from M1 to N83, and the "core domain" contains the residues from N84 to A273. A structure analysis reveals that the "core domain" shares a high degree of structural similarity with chlamydial deubiquitinating enzyme, sentrin-specific protease, and adenovirus protease, while the "arm domain" is unique to ASFV. Further, experiments indicated that the "arm domain" plays an important role in maintaining the enzyme activity of ASFV pS273R. Moreover, based on the structural information of pS273R, we designed and synthesized several peptidomimetic aldehyde compounds at a submolar 50% inhibitory concentration, which paves the way for the design of inhibitors to target this severe pathogen.

IMPORTANCE African swine fever virus, a large and complex icosahedral DNA virus, causes a deadly infection in domestic pigs. In addition to Africa and Europe, countries in Asia, including China, Vietnam, and Mongolia, were negatively affected by the hazards posed by ASFV outbreaks in 2018 and 2019, at which time more than 30 million pigs were culled. Until now, there has been no vaccine for protection against ASFV infection or effective treatments to cure ASF. Here, we solved the high-resolution crystal structure of the ASFV pS273R protease. The pS273R protease has a two-domain structure that distinguishes it from other members of the SUMO protease family, while the unique "arm domain" has been proven to be essential for its hydrolytic activity. Moreover, the peptidomimetic aldehyde compounds designed to target the substrate binding pocket exert prominent inhibitory effects and can thus be used in a potential lead for anti-ASFV drug development.




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Molecular and isotopic evidence for milk, meat, and plants in prehistoric eastern African herder food systems [Anthropology]

The development of pastoralism transformed human diets and societies in grasslands worldwide. The long-term success of cattle herding in Africa has been sustained by dynamic food systems, consumption of a broad range of primary and secondary livestock products, and the evolution of lactase persistence (LP), which allows digestion of lactose...




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The brains of six African mole-rat species show divergent responses to hypoxia [RESEARCH ARTICLE]

Samantha M. Logan, Kama E. Szereszewski, Nigel C. Bennett, Daniel W. Hart, Barry van Jaarsveld, Matthew E. Pamenter, and Kenneth B. Storey

Mole-rats are champions of self-preservation, with increased longevity compared to other rodents their size, strong antioxidant capabilities, and specialized defenses against endogenous oxidative stress. However, how the brains of these subterranean mammals handle acute in vivo hypoxia is poorly understood. This study is the first to examine the molecular response to low oxygen in six different species of hypoxia-tolerant mole-rats from sub-Saharan Africa. Protein carbonylation, a known marker of DNA damage (hydroxy-2’-deoxyguanosine), and antioxidant capacity did not change following hypoxia but HIF-1 protein levels increased significantly in the brains of two species. Nearly 30 miRNAs known to play roles in hypoxia-tolerance were differentially regulated in a species-specific manner. The miRNAs exhibiting the strongest response to low oxygen stress inhibit apoptosis and regulate neuroinflammation, likely providing neuroprotection. A principal component analysis using a subset of the molecular targets assessed herein revealed differences between control and hypoxic groups for two solitary species (Georychus capensis and Bathyergus suillus), which are ecologically adapted to a normoxic environment, suggesting a heightened sensitivity to hypoxia relative to species that may experience hypoxia more regularly in nature. By contrast, all molecular data were included in the PCA to detect a difference between control and hypoxic populations of eusocial Heterocephalus glaber, indicating they may require many lower-fold changes in signaling pathways to adapt to low oxygen settings. Finally, none of the Cryptomys hottentotus subspecies showed a statistical difference between control and hypoxic groups, presumably due to hypoxia-tolerance derived from environmental pressures associated with a subterranean and social lifestyle.




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Discordance between Etravirine Phenotype and Genotype-Based Predicted Phenotype for Subtype C HIV-1 from First-Line Antiretroviral Therapy Failures in South Africa [Antiviral Agents]

Etravirine (ETR) is a nonnucleoside reverse transcriptase inhibitor (NNRTI) used in treatment-experienced individuals. Genotypic resistance test-interpretation systems can predict ETR resistance; however, genotype-based algorithms are derived primarily from HIV-1 subtype B and may not accurately predict resistance in non-B subtypes. The frequency of ETR resistance among recombinant subtype C HIV-1 and the accuracy of genotypic interpretation systems were investigated. HIV-1LAI containing full-length RT from HIV-1 subtype C-positive individuals experiencing virologic failure (>10,000 copies/ml and >1 NNRTI resistance-associated mutation) were phenotyped for ETR susceptibility. Fold change (FC) was calculated against a composite 50% effective concentration (EC50) from treatment-naive individuals and three classifications were assigned: (i) <2.9-FC, susceptible; (ii) ≥2.9- to 10-FC, partially resistant; and (iii) >10-FC, fully resistant. The Stanford HIVdb-v8.4 was used for genotype predictions merging the susceptible/potential low-level and low-level/intermediate groups for 3 x 3 comparison. Fifty-four of a hundred samples had reduced ETR susceptibility (≥2.9-FC). The FC correlated with HIVdb-v8.4 (Spearman’s rho = 0.62; P < 0.0001); however, 44% of samples were partially (1 resistance classification difference) and 4% completely discordant (2 resistance classification differences). Of the 34 samples with an FC of >10, 26 were HIVdb-v8.4 classified as low-intermediate resistant. Mutations L100I, Y181C, or M230L were present in 27/34 (79%) of samples with an FC of >10 but only in 2/46 (4%) of samples with an FC of <2.9. No other mutations were associated with ETR resistance. Viruses containing the mutation K65R were associated with reduced ETR susceptibility, but 65R reversions did not increase ETR susceptibility. Therefore, genotypic interpretation systems were found to misclassify ETR susceptibility in HIV-1 subtype C samples. Modifications to genotypic algorithms are needed to improve the prediction of ETR resistance for the HIV-1 subtype C.




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Công ty CP Đầu tư và Phát triển Công nghệ Mefrimex




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A new wave of apps say they can improve your friendships – can they?

Always forgetting birthdays? Terrible at staying in touch? New tech promises to turn you into the best buddy ever. We put it to the test




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Roy Horn, Half of ‘Siegfried and Roy,’ Dies of Coronavirus

Ethan Miller/Getty

Roy Horn, half of the iconic magician duo Siegfried and Roy, has died from complications of the new coronavirus in Las Vegas. He was 75.

Together with Siegfried Fischbacher, Horn, born Uwe Ludwig Horn, created one of the most widely known magic acts in the world, staging shows filled with sleights of hand and exotic animals for packed audiences in Las Vegas for more than a decade. At its height, the glitzy show grossed $45 million per year, according to The Hollywood Reporter, among the highest ever in Las Vegas.

“Today, the world has lost one of the greats of magic, but I have lost my best friend,” Fischbacher said in a statement. “There could be no Siegfried without Roy, no Roy without Siegfried.” Fischbacher thanked the doctors and nurses who cared for his friend.

Read more at The Daily Beast.




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Video Friday: This Wearable Robotic Tail Will Improve Your Balance

Your weekly selection of awesome robot videos




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Video Friday: Watch Robots Make a Crepe and Twist the Perfect Pretzel

Your weekly selection of awesome robot videos




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Video Friday: AlienGo Quadruped Robot Can Now Do Backflips

Your weekly selection of awesome robot videos




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Video Friday: This Robotic Thread Could One Day Travel Inside Your Brain

Your weekly selection of awesome robot videos




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Video Friday: Misty Robotics Begins Shipping Its Programmable Personal Robot

Your weekly selection of awesome robot videos




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Video Friday: Watch This Robot Dog Explore an Underground Tunnel Autonomously

Your weekly selection of awesome robot videos




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Video Friday: Roller-Skating Quadruped Has Best of Both Worlds Mobility

Your weekly selection of awesome robot videos




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Video Friday: Boston Dynamics' Atlas Robot Shows Off New Gymnastics Skills

Your weekly selection of awesome robot videos




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Video Friday: Caltech's Drone With Legs Takes First Steps

Your weekly selection of awesome robot videos




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Video Friday: This Humanoid Robot Will Serve You Ice Cream

Your weekly selection of awesome robot videos




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Video Friday: Transferring Human Motion to a Mobile Robot Manipulator

Your weekly selection of awesome robot videos




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Video Friday: Kuka's Robutt Is a Robot Designed to Assess New Car Seats

Your weekly selection of awesome robot videos




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Video Friday: DJI's Mavic Mini Is a $400 Palm-Sized Foldable Drone

Your weekly selection of awesome robot videos




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Video Friday: Invasion of the Mini Cheetah Robots

Your weekly selection of awesome robot videos




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Video Friday: Robotic Endoscope Travels Through the Colon

Your weekly selection of awesome robot videos




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Video Friday: This Robot Refuses to Fall Down Even if You Hit, Shove It

Your weekly selection of awesome robot videos




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Siegfried & Roy Magician Roy Horn Dead at 75 Due to COVID-19 Complications

“Today, the world has lost one of the greats of magic, but I have lost my best friend,” Siegfried Fischbacher said in a statement.




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Pokemon GO Friends List 'Failed to get friends list' error is back



Failed to get friends list and several more Pokemon GO friends list errors are once again impacting players on iOS and Android.




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RPGCast – Episode 315: “Manny Needs Friends”

Manny gives fashion advice. Chris learns that he doesn’t know how to Kindle. And Anna Marie orders avatar tuna. Is it a slow news week?




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Taking on COVID-19, South Africa Goes After Cigarettes and Booze, Too

JOHANNESBURG -- The dealer had a stash, but the young woman wasn't getting through the door without an introduction. That's where her friend, already a trusted customer, came in. And even then there were complications.The woman wanted Stuyvesants. The dealer had Courtleighs. But in a South Africa where the sale of cigarettes is newly illegal, quibblers risk nicotine fits.She took the Courtleighs and high-tailed it out of there."I feel like I'm buying cocaine," said the woman, 29, who asked not to be named for fear of being fined or arrested.In late March, in the midst of the coronavirus outbreak, the South African government banned the sale of tobacco and alcohol as part of a broad lockdown -- one of the strictest anywhere. But even as the government has begun rolling back the lockdown, the bans remain in effect.A government minister, Nkosazana Dlamini-Zuma, cited "COVID-19 reasons" for maintaining the ban.Dlamini-Zuma, a doctor who served as health minister in the 1990s and is now cooperative governance minister, said that "besides the effects itself on the person's lungs," there were concerns that smoking could promote coronavirus infection."The way sometimes tobacco is shared does not allow for social distancing," she said, "but actually encourages the spread of the virus."Defending the ban of alcohol sales amid cries of protest from the liquor industry, President Cyril Ramaphosa said alcohol was "a hindrance to the fight against coronavirus.""There are proven links between the sale and consumption of alcohol and violent crime, motor vehicle accidents and other medical emergencies at a time when all public and private resources should be preparing to receive and treat vast numbers of COVID-19 patients," the president said in a statement.The government has also cited the risk of domestic violence in households where families are isolated at home.Perhaps not surprisingly, an underground market in both cigarettes and alcohol quickly sprung up.Like bootleg markets everywhere, it relies on word-of-mouth, as the 29-year-old woman who settled for the Courtleighs soon learned.She made her purchase in a suburb of Vereeniging, a city south of Johannesburg, where dealers are said to sell only to buyers referred by someone they know. And they sell only from their homes to avoid driving around with large quantities of cigarettes, since if they were to be caught at one of the dozens of police roadblocks set up around the country, they could be arrested on the spot.Instead, the smoker carries the risk -- and the cost. A pack of 20 cigarettes now goes for upward of 150 rand (about $8), three times the old legal price. Underground alcohol prices have also skyrocketed. A bottle of low-end vodka that usually sells for 120 rand ($6) now sells for at least 400 rand ($21).South Africa lifted its nationwide lockdown on May 1 but is continuing to implement strict social distancing and face mask rules. Already under siege from HIV, the country has around 8,200 confirmed cases of the coronavirus and has reported about 160 deaths.The country had implemented one of the world's most stringent lockdowns after recording its first coronavirus-related death in March. In addition to banning the sale of cigarettes and alcohol, the regulations banned jogging and dog-walking, and shuttered parks.Before the lockdown, with a ban looming, some smokers stocked up on cartons of cigarettes. But when the ban on cigarettes was extended beyond May 1, things for smokers began to grow tense.Now it's a matter of who you know. The cafe owner willing to slip a box under a container of milk, perhaps, or a supermarket cashier willing to steal and resell cigarettes languishing in the storeroom.In one Pretoria township where everyone knows everyone -- including the police -- few dare sell cigarettes from their homes. Instead, dealers hide among young men milling around on the neighborhood corner.A 23-year-old smoker said that when he saw a group of four men sharing a cigarette, he approached them to find out where they had found the contraband. They just so happened to be selling, they told him.Desperate after a failed attempt to quit smoking, he said, he paid 160 rand for his favorite brand and "ran home," where he took a photograph of the sealed pack, planning to share it on WhatsApp with envious fellow smokers.But when he opened the pack, a cloud of sawdust choked him. There was not a cigarette to be found.Smokers say they are finding fake cigarettes in sealed boxes that look exactly like legitimate brands. And those who are desperate enough are buying unknown brands that have appeared during the lockdown, with names like Pineapple and Chestel, and are notorious for inducing immediate coughing.The tobacco industry has not taken kindly to the government's new policy.The ban has fueled an underground cigarette trade that was thriving even before the lockdown. By some estimates, it made up more than 30% of the market, depriving the above-ground tobacco industry of profit and the government of tax revenue.Now both industry and government are losing even more.The country's largest cigarette manufacturer, British American Tobacco South Africa, at one point threatened legal action if the government did not drop its ban, but Wednesday changed course. "We have taken the decision not to pursue legal action at this stage," it said in a statement, "but, instead, to pursue further discussions with government."The company said, "We are convinced that by working together we can find a better solution that works for all South Africans and removes the threat of criminal sanction from 11 million tobacco consumers in the country."The ban on cigarettes and alcohol has set off a debate on civil liberties in a country with one of the world's most liberal constitutions. While South Africa was an early adopter of public smoking regulations, many see the bans as a symbol of government overreach.Though its coronavirus policies may have succeeded in keeping the outbreak in check, some are calling the government hypocritical. Junk food remains readily available. And officials strictly limited outdoor exercise during the lockdown.In a country increasingly struggling with diabetes and obesity, such inconsistencies undercut the government's argument that it is guarding the public's health, said one South African constitutional law expert, Pierre De Vos."In the long term, if the government overreaches and it wants to continue imposing these limits when the threat has subsided, I think the courts will invalidate this," he said.Still, the ban may have yielded at least one former smoker: the man who bought the box of sawdust."I cannot just go around losing money like that," he said. "I just said to myself, 'Nah, man, it's not worth it. I'll stay home and eat sweets, as that's what's legal now.'"This article originally appeared in The New York Times.(C) 2020 The New York Times Company





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Hayley Squires: 'Who do I most admire? Two friends who work for the NHS'

The I, Daniel Blake star on her parents’ generosity, working in a call centre and her love of ice-cream

Born in London, Squires, 32, studied at Rose Bruford College in London. She starred in the Ken Loach film, I, Daniel Blake in 2016, earning a Bafta nomination and winning most promising newcomer at the British Independent Film awards. Her West End debut in Cat On A Hot Tin Roof followed in 2017. Her television work includes The Miniaturist and Collateral; in the autumn she will play the lead in the Channel 4 drama, Adult Material.

What is your greatest fear?
Snakes.

Continue reading...




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RIP Roy Horn: Fans and Celebrities Remember the Siegfried and Roy Magician

Half of the legendary Las Vegas magic duo died on Friday following complications from COVID-19.




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Praying mantis eats murder hornet in frightening video

Graphic viral video shows a praying mantis snatch a murder hornet from behind, hold its deadly stinger at bay and chew through its entire head.





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What can you do about friends who believe coronavirus conspiracy theories?

Relationships that suffer as a result of unreconcilable politics may force you to make a decision. To make that less distressing, choose consciously.




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Roy Horn of Vegas duo Siegfried & Roy dead from coronavirus

The magician survived an attack by a 380-pound tiger, who bit his neck during a show at the Mirage Las Vegas in 2003.




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How Africa's Mountain Gorillas Staged a Comeback

Long victimized by poaching and deforestation, the primate species is in the midst of a surprising rebound that is sparking new hopes of recovery




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In Groundbreaking Find, Three Kinds of Early Humans Unearthed Living Together in South Africa

The different hominid species, possibly including the oldest-known Homo erectus, existed in the region's hills and caves




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Roy Horn of Las Vegas magic duo Siegfried and Roy dies of COVID-19: report

Magician Roy Horn, who alongside Siegfried Fischbacher starred in a popular, long-running Las Vegas act built around rare tigers, died on Friday from of complications of COVID-19, the Las Vegas Review-Journal newspaper reported. He was 75.