Testing chemical toxicity challenge announced by USEPA + National Institutes of Health
January 8, 2016 05:19 PM - USEPA
Today, the U.S. Environmental Protection Agency (EPA) and the National Institutes of Health’s (NIH) National Center for Advancing Translational Sciences (NCATS), and NIH’s National Toxicology Program (NTP) within the National Institute of Environmental Health Sciences (NIEHS) are announcing a new challenge that will award up to $1 million to improve the relevance and predictivity of data generated from automated chemical screening technology used for toxicity testing.
Out of thousands of chemicals in commerce today, very few have been fully evaluated for potential health effects. Scientists from EPA, NIEHS/NTP, and NCATS are using high-throughput screening (HTS) assays to evaluate the potential health effects of thousands of chemicals. High-throughput screening uses automated methods that allow for a large number of chemicals to be rapidly evaluated for a specific type of biological activity.
How competition for sunlight shapes forest structure
January 8, 2016 07:20 AM - Princeton University via EurekAlert!
Despite their diversity, the structure of most tropical rainforests is highly predictable. Scientists have described the various sizes of the trees by a simple mathematical relationship called a power law.
In a new study using data from a rainforest in Panama, researchers determined that competition for sunlight is the underlying cause of this common structure, which is observed in rainforests around the globe despite differences in plant species and geography. The new finding can be used in climate simulations to predict how rainforests absorb excess carbon dioxide from the atmosphere.
New Federal dietary guidelines recommend eating less meat
January 7, 2016 12:17 PM - NRDC
Many Americans, especially men and teenage boys, eat too much red meat, poultry and eggs, and should reduce their consumption, according to new federal dietary guidelines jointly released today by the U.S. Department of Agriculture and the Department of Health and Human Services. Reducing Americans’ meat consumption will not only help improve public health, but reduce climate and water pollution from the meat industry.
This is the first time federal dietary guidelines have included a recommendation to reduce meat consumption. The report advises that cutting back on meat can reduce the risk of cardiovascular disease, obesity, type 2 diabetes and some types of cancer.
The new dietary advice, however, did not include the recommendation from the agencies’ expert scientific advisors that the FDA explicitly link the science-based benefits of adopting diets lower in red meat, and higher in plant-based foods, to additional benefits to environment sustainability and to food security.
Anthropogenic nitrogen being added to oceans far less than previously assumed
January 7, 2016 07:20 AM - Brown University via EurekAlert.
A new study finds that human activities are likely contributing far less nitrogen to the open ocean than many atmospheric models suggest. That's generally good news, but it also nullifies a potential side benefit to additional nitrogen, says Meredith Hastings, associate professor of Earth, environmental and planetary sciences at Brown University and one of the study's co-authors.
"People may not be polluting the ocean as much as we thought, which is a good thing," said Hastings, who is also a fellow at the Institute at Brown for Environment and Society. "However, additional nitrogen could potentially stimulate the ocean's ability to draw down carbon dioxide out the atmosphere, which might counteract carbon emissions to some extent. But if we're not adding as much nitrogen, we're not getting that potential side benefit in the carbon cycle."
Tiny chameleons deliver powerful tongue-lashings
January 7, 2016 07:20 AM - Brown University
A new study reports one of the most explosive movements in the animal kingdom: the mighty tongue acceleration of a chameleon just a couple of inches long. The research illustrates that to observe some of nature’s best performances, scientists sometimes have to look at its littlest species.
Lawrence Livermore Laboratory developing underground battery system to store energy and CO2
January 6, 2016 04:30 PM - Lawrence Liverpool Laboratory.
Meeting the Paris Climate Agreement goal of limiting the increase in the global average temperature to well below two degrees Celsius compared to pre-industrial levels will require increased use of renewable energy and reducing the CO2 intensity of fossil energy use.
The intermittency of when the wind blows and when the sun shines is one of the biggest challenges impeding the widespread integration of renewable energy into electric grids, while the cost of capturing CO2 and storing it permanently underground is a big challenge for decarbonizing fossil energy.
However, researchers from Lawrence Livermore National Laboratory, Ohio State University, University of Minnesota and TerraCOH, Inc. think they’ve found an answer to both of these problems with a large-scale system that incorporates CO2 sequestration and energy storage.
Understanding oxygen concentrations 1.4 billion years ago
January 6, 2016 07:07 AM - University of Southern Denmark via EurekAlert!
Oxygen is crucial for the existence of animals on Earth. But, an increase in oxygen did not apparently lead to the rise of the first animals. New research shows that 1.4 billion years ago there was enough oxygen for animals - and yet over 800 million years went by before the first animals appeared on Earth.
How you manage your email can affect your stress level
January 6, 2016 06:55 AM - BRITISH PSYCHOLOGICAL SOCIETY via EurekAlert.
New research suggests that it's not just the volume of emails that causes stress; it's our well-intentioned habits and our need to feel in control that backfires on us.
These are some of the key findings presented next week, Thursday 7 January 2016, at the British Psychological Society's Division of Occupational Psychology annual conference in Nottingham by Dr Richard MacKinnon from the Future Work Centre.
Volunteering is good for your health!
January 5, 2016 06:11 PM - Eric Kim, Harvard School of Public Health
Eric Kim, a research fellow in the Department of Social and Behavioral Sciences at Harvard T.H. Chan School of Public Health, recently led the first study to look at a possible link between volunteering and health care use in older adults.
Why did you decide to study volunteering from a public health perspective?
There is a growing body of research showing that volunteering is associated with better physical health and mental health outcomes, as well as better health behaviors.
Another important reason is that the number of older adults in the U.S., and other countries, is rapidly rising. Over the next 35 years, the number of 65-year-olds is going to double. As a result, the number of chronic illnesses will likely rise causing at least two outcomes: First, there will be a large increase in the number of people suffering. Second, the rising number of illnesses is going to put a huge burden on our health care system. If volunteering does affect health care use, these findings could be used to inform new strategies for increasing preventive health screenings, lowering emergency room use and health care costs, and also enhancing the health of older adults.
County of origin labeling on our meat no longer required
January 5, 2016 05:09 AM - Mary Clare Jalonick, Organic Consumers Association
It's now harder to find out where your beef or pork was born, raised and slaughtered.
After more than a decade of wrangling, Congress repealed a labeling law last month that required retailers to include the animal's country of origin on packages of red meat. It's a major victory for the meat industry, which had fought the law in Congress and the courts since the early 2000s.
Lawmakers said they had no choice but to get rid of the labels after the World Trade Organization repeatedly ruled against them. The WTO recently authorized Canada and Mexico, which had challenged the law, to begin more than $1 billion in economic retaliation against the United States.