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An aquarium in Japan has urged the public to video-chat their eels, who are forgetting that humans exist.

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NASA has awarded $967 million to three space flight companies – Blue Origin, Dynetics and SpaceX – to build lunar landers that will be part of the Artemis programme to send humans to the moon by 2024

Global warming has already made parts of the world – including cities in Pakistan and the United Arab Emirates – hotter than the human body can withstand

A potentially fatal viral infection that affects pigs can readily find its way into human cells, say scientists, raising concerns about the potential for outbreaks that threaten our health. Researchers at Ohio State University in the US and Utrecht University in the Netherlands collaborated to better understand the new virus and its potential reach.

The study, published in the in the journal PNAS, is the first to point to possible transmission of this virus between species. Porcine deltacoronavirus was first identified in 2012 in pigs in China, but it was not associated with disease. It was first detected in the US in 2014 during a diarrhea outbreak in Ohio pigs and has since been detected in various countries. Young, infected pigs experience acute diarrhea and vomiting. The disease can be fatal.

As of yet, no human cases have been documented, but scientists are concerned about the possibility. "Before it was found in pigs ¿ including in the Ohio outbreak ¿ it had only been found in various birds," said Linda Saif, a professor in Ohio State University in the US. "We're very concerned about emerging coronaviruses and worry about the harm they can do to animals and their potential to jump to humans," said Saif.

Emergence of the new virus is especially worrisome to veterinary and public-health experts because of its similarity to the life-threating viruses responsible for SARS (severe acute respiratory syndrome) and MERS (Middle East respiratory syndrome) outbreaks. The potential for a virus to jump from one species to another is highly dependent on its ability to bind to receptors on the cells of the animal or human, said Scott Kenney, an assistant professor at Ohio State University.

"A receptor is like a lock in the door. If the virus can pick the lock, it can get into the cell and potentially infect the host," he said. The study looked at a particular cellular receptor called aminopeptidase N that the researchers suspected might be involved. "We know from other coronaviruses that these receptors on the cells are used and that they're found in the respiratory and digestive tracts of a number of different animals," Kenney said.

"Now we know that this new virus could go into cells of different species, including humans," he added. For now, the only known infection in humans and other species is in the laboratory, using cultured cells. The study confirmed that the virus could bind to human cells, and to cells from cats and chickens. "This doesn't prove that this virus can infect and cause disease in these other species, but that's something we obviously want to know," Saif said.

The next step in understanding this virus and its potential for human infection will be a study looking for antibodies in the blood that would serve as evidence that the pig virus has already infected people.

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In a bid to deliver transparency in technology and stay ahead of ethical pitfalls, Google has said that its Artificial Intelligence (AI) calling system "Duplex" would now identify itself while making appointments.

Following the launch of the "Duplex" system, which lets AI mimic a human voice to make appointments and book tables, among other functions, a widespread outcry over the ethical dilemmas were raised by tech critics.

Google clarified to The Verge that the experimental system would have a "disclosure built-in" that means that whenever Duplex gets involved in some type of verbal communication with a human at the other end, it would identify that the human is talking to an AI.

"We understand and value the discussion around Google Duplex, as we have said from the beginning, transparency in the technology is important," a Google spokesperson was quoted as saying.

"We are designing this feature with disclosure built-in, and we will make sure the system is appropriately identified. What we showed at I/O was an early technology demo, and we look forward to incorporating feedback as we develop this into a product," the spokesperson added.

Google CEO Sundar Pichai introduced Duplex earlier this week in the company's annual developer's conference Google I/O and demonstrated how the AI system could book an appointment at a salon and a table at a restaurant.

In the demo, the Google Assistant sounded like a human. It used Google DeepMind's new WaveNet audio-generation technique and other advances in Natural Language Processing (NLP) to replicate human speech patterns.

However, tech critics raised questions on the morality of the technology saying it was developed without proper oversight or regulation.

According to tech critic Zeynep Tufekci, the demo was "horrifying" and the initial positive audience reaction at I/O was evidence that "Silicon Valley is ethically lost, rudderless and has not learned a thing".

Google had originally said in a blog post written by engineers Yaniv Leviathan and Yossi Matias that "it's important to us that users and businesses have a good experience with this service and transparency is a key part of that".

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While Google Duplex, which lets AI mimic a human voice to make appointments and book tables through phone calls, has mesmerised people with its capabilities and attracted flak on ethical grounds at the same time, Microsoft has showcased a similar technology it has been testing in China.

At an AI event in London on Tuesday, Microsoft CEO Satya Nadella revealed that the company's Xiaoice social chatbot has 500 million "friends" and more than 16 channels for Chinese users to interact with it through WeChat and other popular messaging services.

"Microsoft has turned Xiaoice, which is Chinese for 'little Bing', into a friendly bot that has convinced some of its users that the bot is a friend or a human being. Xiaoice has her own TV show, it writes poetry and it does many interesting things," The Verge quoted Nadella as saying.

Xiaoice interacts in text conversations but now the company has started allowing the chat bot to call people on their phones.

The bot does not work exactly like Google Duplex, which uses the Assistant to make calls on a user's behalf but it holds a phone conversation with the user.

"One of the things we started doing earlier this year is having full duplex conversations. So now Xiaoice can be conversing with you in WeChat and stop and call you. Then you can just talk to it using voice," Nadella was quoted as saying.

Humans will be humans and the latest victim of humankind was Microsoft.

Two years ago, Microsoft launched an artificial intelligence (AI)-powered bot on Twitter, named Tay, for a playful chat with people, only to silence it within 24 hours as users started sharing racist and offensive comments with the bot.

Launched as an experiment in "conversational understanding" and to engage people through "casual and playful conversation", Tay was soon bombarded with racial comments and the innocent bot repeated those comments back with her commentary to users.

Some of the tweets had Tay referring to Hitler, denying the Holocaust, and supporting Donald Trump's immigration plans, among others.

Later, a Microsoft spokesperson confirmed to TechCrunch that the company is taking Tay off Twitter as people were posting abusive comments to her.

Catch up on all the latest Crime, National, International and Hatke news here. Also download the new mid-day Android and iOS apps to get latest updates

A new pneumonia vaccine that is more effective and less expensive than those currently used in Brazil is being tested in human patients, said researchers

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Stanford professor Scott Hubbard said in an interview that NASA must adopt 'planetary protection' to keep alien viruses from returning from the human Mars mission and contaminating Earth.

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