Collisions have consequences. Everyone knows that. Whether it's between trains, planes, automobiles or atoms, there are always repercussions. But while macroscale collisions may have the most obvious effects - mangled steel, bruised flesh - sometimes it is the tiniest collisions that have the most resounding repercussions.
Stanford, CA— It's not just about climate change anymore. Besides loading the atmosphere with heat-trapping greenhouse gases, human emissions of carbon dioxide have also begun to alter the chemistry of the ocean—often called the cradle of life on Earth. The ecological and economic consequences are difficult to predict but possibly calamitous, warn a team of chemical oceanographers in the July 4 issue of Science, and halting the changes already underway will likely require even steeper cuts in carbon emissions than those currently proposed to curb climate change.
Dutch ecologist Marijke van Kuijk has studied the regeneration of the tropical forest in Vietnam. Abandoned agricultural land does regenerate to tropical forest, but only slowly. Two procedures are used to help nature along: pruning of foliage to free up space for trees and planting the desired tree species. Van Kuijk used the PHOLIAGE model to calculate the appropriate measures.
GAINESVILLE, Fla. --- Even in geology, it's not often a date gets revised by 500 million years.
1. Carbon enters deep Arctic Ocean mainly from continent edges
The May 12 earthquake that rocked Sichuan Province in China was the first there in recorded history and unexpected in its magnitude. Now a team of geoscientists is looking at the potential for future earthquakes due to earthquake-induced changes in stress.
Earth-abundant, cheap metals are promising photocatalytic electrode materials in artificial photosynthesis. A team of Chinese scientists now reports that a thin layer of titania beneath hematite nanorods can boost the performance of the photoanode. As outlined in their report in the journal Angewandte Chemie, the nanostructured electrode benefits from two separate effects. This design combining nanostructure with chemical doping may be exemplary for improved "green" photocatalytic systems.
In 2011 a team of researchers led by Vasilii Petrenko, an assistant professor of Earth and Environmental Sciences at the University of Rochester, spent seven weeks in Antarctica collecting and studying 2,000-pound samples of glacial ice cores that date back nearly 12,000 years. The ancient air trapped within the ice revealed surprising new data about methane that may help inform today's policymakers as they consider ways to reduce global warming.
Estrogen hormones regulate gene expression. They achieve this by first binding to estrogen receptor in the cell nucleus, which triggers the recruitment of different molecules called coactivators in specific order.
New York - August 23, 2017 - An international team of scientists investigating the effects of six planned or potential Andean dams on the Amazon river system has found that major negative ecological impacts can be expected both above the dams and throughout the lowland floodplains and the Amazon Delta, according to WCS (Wildlife Conservation Society), the Instituto Nacional de Pesquisas da Amazonia, and other groups.