sea

DOE’s justification for rescinding Gainful Employment rules distorts research

The Department of Education has rescinded the Gainful Employment regulations developed by the Obama administration. These regulations were designed to cut off federal student aid to postsecondary programs that produce earnings too low to support the debt students incur while earning credentials that promise to lead to good jobs. This action is a significant step…

       




sea

Coupled Contagion Dynamics of Fear and Disease: Mathematical and Computational Explorations

Published version of the CSED October 2007 Working Paper

ABSTRACT

Background

In classical mathematical epidemiology, individuals do not adapt their contact behavior during epidemics. They do not endogenously engage, for example, in social distancing based on fear. Yet, adaptive behavior is well-documented in true epidemics. We explore the effect of including such behavior in models of epidemic dynamics.

Methodology/Principal Findings

Using both nonlinear dynamical systems and agent-based computation, we model two interacting contagion processes: one of disease and one of fear of the disease. Individuals can “contract” fear through contact with individuals who are infected with the disease (the sick), infected with fear only (the scared), and infected with both fear and disease (the sick and scared). Scared individuals–whether sick or not–may remove themselves from circulation with some probability, which affects the contact dynamic, and thus the disease epidemic proper. If we allow individuals to recover from fear and return to circulation, the coupled dynamics become quite rich, and can include multiple waves of infection. We also study flight as a behavioral response.

Conclusions/Significance

In a spatially extended setting, even relatively small levels of fear-inspired flight can have a dramatic impact on spatio-temporal epidemic dynamics. Self-isolation and spatial flight are only two of many possible actions that fear-infected individuals may take. Our main point is that behavioral adaptation of some sort must be considered.”

View full paper »
View factsheet »

Downloads

Authors

Publication: PLoS One Journal
      
 
 




sea

Colombia’s search for peace and justice

In June 2016, the government of Colombia signed a historic peace agreement with the armed rebel group known as FARC-EP to end a conflict that over five decades had taken the lives of at least 260,000 Colombians and displaced over 7 million. Three years later, the peace accord—a complex effort to not only stop the…

       




sea

Governing the Nile River Basin : The Search for a New Legal Regime


Brookings Institution Press 2015 150pp.

The effective and efficient management of water is a major problem, not just for economic growth and development in the Nile River basin, but also for the peaceful coexistence of the millions of people who live in the region. Of critical importance to the people of this part of Africa is the reasonable, equitable and sustainable management of the waters of the Nile River and its tributaries.

Written by scholars trained in economics and law, and with significant experience in African political economy, this book explores new ways to deal with conflict over the allocation of the waters of the Nile River and its tributaries. The monograph provides policymakers in the Nile River riparian states and other stakeholders with practical and effective policy options for dealing with what has become a very contentious problem—the effective management of the waters of the Nile River. The analysis is quite rigorous but also extremely accessible.

Downloads

Ordering Information:
  • {9ABF977A-E4A6-41C8-B030-0FD655E07DBF}, 9780815726555, $32.00 Add to Cart
      
 
 




sea

Governing the Nile River Basin: The Search for a New Legal Regime


The Nile River is one of the most important resources in Africa and supports the livelihoods of millions of people. Recently, though, efficient and equitable utilization of the waters of the Nile River has become an increasingly contentious issue, with many of the riparian countries demanding a revision of what they believe is an inappropriate legal regime. Currently, allocation and utilization of the waters of the Nile River is governed by the colonial-era Nile Waters Agreements, which were negotiated and entered into with the help of Great Britain, but without the participation of most of the river’s riparian states. These agreements allocated most of the waters of the Nile River to the downstream riparians—Egypt and Sudan—largely ignoring the development needs of the upstream riparians, like Ethiopia, whose highlands provide most of the water that flows into the Nile River. The upstream riparians contend that they were not party to the Nile Waters Agreements and thus should not be bound by them. As such, they want these agreements set aside and a new, more equitable legal regime. Egypt, however, considers the existing legal regime binding on all the Nile River riparian states and, thus, is opposed to any changes that might interfere with or reduce its “historically acquired rights.” Already the decision by Addis Ababa to proceed with the construction of the Grand Ethiopian Renaissance Dam on the Blue Nile has caused significant deterioration in relations between Cairo and Addis Ababa.

With significant increases in population and pressure to deliver development, especially in the upstream riparian states, the demand for water has become a very important policy imperative in the region. In fact, earlier this year Egypt claimed that, in order to meet its growing water needs by 2050, it will need to add 21 billion cubic meters of water per year to its current water allocation of 55 billion cubic meters. Thus, there is a fear that if this issue is not fully resolved soon, it could morph into a military crisis.

In our new book, Governing the Nile River Basin: The Search for a New Legal Regime, we argue that the current legal regime governing the allocation and utilization of the waters of the Nile River is not tenable, and there is an urgent need for all the Nile River riparian states to enter into a mutually agreed upon legal regime. Issues pertaining to transboundary water resource management, the evolution of current agreements and the role and interests of colonial powers, theories of treaty succession, and the recent attempts by the riparian states to formulate a new legal agreement, are thoroughly examined. We conclude that the most effective way to deal with conflict arising from the allocation and utilization of the Nile River’s waters is for all the downstream and upstream riparians to engage in fresh negotiations to design and adopt a new legal regime. Through a fully consultative process, these countries can provide the Nile River Basin with a legal regime that enhances equitable allocation and utilization. 

      
 
 




sea

Trader Joe's Flunks Sustainable Seafoods 101 (Again)

C'mon, you know a Trader Joe's addict or two, don't you? It's sometimes impossible to resist the combination of lower prices and lots of organic and even Fair




sea

Whole Foods Market to Stop Sales of Unsustainable Seafood

An initiative to stop selling red-rated seafood by 2013 had been launched a year early and will go into effect on Earth Day 2012.




sea

Safeway, Whole Foods Get Greenpeace Green Rating For Seafood Sales

For the first time ever Greenpeace has given a US seafood retailer (in fact two of them) a green rating. There are some notable laggards though.




sea

Rare Swan 'Divorce' Puzzles Researchers

Once thought of as pillars of monogamy in the animal kingdom, it appears the flame of love can burn out for swans as well. For the first time in 40 years, after following some 4 thousand swans at a reserve in the UK, researchers discovered one formerly




sea

New Research Shows Baltimore Heatwave Was Worsened by DC's Hot Air

In July of 2007, the East Coast was slammed by a record-setting heat wave. From New York City to Washington, DC, temperatures averaged above 90 degrees Fahrenheit, causing more than 40 deaths.




sea

First-Ever Geoengineering Research Ban Considered by Convention on Biological Diversity

While preservation of the planet's dwindling biodiversity itself has rightly grabbed the headlines at the ongoing Convention on Biological Diversity in Japan, Science Insider points out an important geoengineering




sea

Wave Power ‘Sea Snake’ Inventor Honored

An inventor has been awarded for his novel technology for generating energy with waves.




sea

Bear's Head Freed From Jar After Three-Week Search

Late last month, when officer Shelley Hammonds of the Tennessee Wildlife Resources Agency received word of an animal in distress, it might have sounded like a routine rescue operation. Witnesses described




sea

Viper Eel, More Undersea Creatures in X-ray Exhibit

See fish in black and white, bones and flesh, in Smithsonian exhibit, touring the U.S.




sea

Researchers Use Rust and Water to Store Solar Energy as Hydrogen

Researchers have used abundant and inexpensive materials to create a tandem solar cell that can store solar energy as hydrogen for use at any time of day.




sea

Researchers discover way to produce hydrogen fuel from any plant

Virginia Tech researchers figure out how to extract large quantities of hydrogen from any plant which could drive down fuel cell costs.




sea

Toyota Passo Sette: Yaris-Sized 7 Seat MPV

The Amazing Shrinking car It seems like Toyota has learned quite a bit from building the Toyota iQ (follow link for photos), the "Smallest Four-Passenger Car in the World". But the question really was, if they can fit 4 people in a car that small, how




sea

Sears & Kmart Join Wal-Mart, Target In PVC Reduction Programs

Short design-life products made of PVC have been a common, inexpensive, and functional choice for almost 50 years. But, vinyl can also be a risky choice of material for objects often handled by consumers, posing a risk of lead exposure, especially if




sea

As sea waters rise, coastal communities in Pakistan suffer

A new report chronicles the impact of climate change along Pakistan's shores.




sea

These sassy little seahorses are the size of a grain of rice

Meet the 'Japan pig,' a newly discovered pygmy seahorse that is as tiny as it is beautiful.




sea

Chelsea Flower Show welcomes new young designers to the fold

The show is 101 years old, but this year it's the newcomers that are making their mark.




sea

From toilet to table: Peecycling research at U of M investigates urine as fertilizer

Could human urine be used on a commercial scale to fertilize the food we eat?




sea

Seattle to fine residents who don't compost

In a bid to meet the city's goal of recycling 60% of its waste by 2015, Seattle is turning its sights on food scraps that end up in the trash.




sea

TreeHugger is off to the Passive House Northwest Conference in Seattle

These are interesting times for the Passive House movement in America, and this should be a very interesting conference.




sea

Students aim to build village of tiny homes for Seattle's homeless (Video)

A Seattle educational non-profit hopes to crowd-fund a series of portable, off-grid shelters for some of the city's homeless, which local high school students will design and build with the help of professional architects and builders.




sea

Another one bites the dust: Seattle's Edith Macefield House might have just 90 days

I could write this post in my sleep, it is such a tired playbook that happens so often in real estate development.




sea

Susan Jones' Seattle CLT house is a wooden wonder

It really could be the future of sustainable, green and healthy housing.




sea

Perkins + Will's Seattle office is designed to be toxin-free

Which really, is how every building and office should be designed.




sea

Seattle Bike Share system is being shut down

Bike share programs are public transit, and that requires public support.




sea

Seattle fights for sea animals by going strawless for September

Residents and businesses alike are joining the Lonely Whale Foundation to help stem ocean pollution by giving up plastic straws for the month.




sea

Why Amazon Go should be a no-go: We will drown in a sea of plastic

Even the fruits and vegetables are wrapped in plastic so that the sensors can read them, inculcating a culture of convenience and waste.




sea

Amazon's Spheres open in Seattle

Jeff Bezos said “Alexa, open The Spheres” and it evidently worked.




sea

Seattle bans plastic straws, utensils and cocktail picks

Strawless in Seattle is now officially enshrined into law.




sea

This small apartment building in Seattle could be a model for solving our housing and energy crises

Passive House multifamily buildings use almost no energy and don't cost much more than conventional buildings. They should be everywhere.




sea

Start a Sea Change This Weekend with the Ocean Conservancy

No plans this weekend? Why not Start a Sea Change? Planet Green’s non-profit partner, the Ocean Conservancy, hosts their 23rd annual International Coastal Cleanup




sea

Leonardo DiCaprio wants to find the world's loneliest whale, donates $50k for search

Good Guy Leo strikes again!




sea

8 Enchanting Sea Creatures You Can Crochet

Save the sea creatures! Handcraft your own natural specimens using these these simple patterns, yarn and a crochet hook.




sea

Inky the octopus escapes from aquarium through a drainpipe to the sea

In a tale of intrigue and derring-do, the crafty cephalopod slipped out of his enclosure and found his way to freedom.




sea

Tired iguana lost at sea gets ride to shore from kind kayaker (video)

Four miles from the shore of Key West, the fatigued iguana eagerly scrambled aboard the kayak and hitched a ride home.




sea

Seaweed key to a sustainable T-shirt

Apparel hasn't gotten more sustainable since we started TreeHugger, but a new day for the old T-shirt could be near.




sea

Winters Were Colder in Your Parents' Day: New England Trees Get 10 Days More Growing Season Than Pre-1970

According




sea

Stool ZERO: Handwoven seating made from recycled fans & wire

Vibrantly colored wire is saved from the landfill and woven into recycled fan cages to produce these fresh pieces of furniture.




sea

Photo: Demure seahorse plays coy in the coral

Our photo of the day comes from the waters off Sydney, Australia.




sea

The Red Bees of Brooklyn, and a Search for a Solution

Earlier in the week, the New York Times reported that bees in Brooklyn had started turning red, and their honey was looking like bright red goo. It turned out that




sea

Goodbye Yellow Pages, Hello Local Search

Remember the Yellow Pages Association? They represent the folks who print phone books. They've fought some efforts by cities to ban phone book distribution, and




sea

The office of the future may have no seats or desks at all.

Just throw yourself wherever you want to work; your office is where you are.




sea

Researchers at Texas A&M develop a bossy and nosy standing desk

It tells you when to get up and to sit down, and checks up on you too.




sea

Meet Neptune’s tiny new moon, beautifully named after a mythological seahorse

For billions of years, a tiny moon has been slyly orbiting the ice giant – now the little lovely has a poetic name, as well as a surprisingly violent backstory.




sea

A sea of plastic trash hovers near Caribbean island

These photos reveal the horror of our disposable, consumerist culture and how it's ruining the most beautiful places on Earth.




sea

Researchers say they're close to a finger swipe-powered phone

Forget plugging in your phone to charge, soon the battery could stay topped off from swipes and typing.