DURHAM, N.H. -- In a study to be published next week in the Proceedings of the National Academy of Sciences, scientists led by a team at the University of New Hampshire show that forests may influence the Earth's climate in important ways that have not previously been recognized.
Take a gold sample the size of the head of a push pin, shoot a laser through it, and suddenly more than 100 billion particles of anti-matter appear.
The anti-matter, also known as positrons, shoots out of the target in a cone-shaped plasma "jet."
This new ability to create a large number of positrons in a small laboratory opens the door to several fresh avenues of anti-matter research, including an understanding of the physics underlying various astrophysical phenomena such as black holes and gamma ray bursts.
Water vapor is known to be Earth's most abundant greenhouse gas, but the extent of its contribution to global warming has been debated. Using recent NASA satellite data, researchers have estimated more precisely than ever the heat-trapping effect of water in the air, validating the role of the gas as a critical component of climate change.
Increasing levels of nitrogen deposition associated with industry and agriculture can drive soils toward a toxic level of acidification, reducing plant growth and polluting surface waters, according to a new study published online in Nature Geoscience.
Blacksburg, Va. -- Intense glacial erosion has not only carved the surface of the highest coastal mountain range on earth, the spectacular St. Elias range in Alaska, but has elicited a structural response from deep within the mountain.
This interpretation of structural response is based on real-world data now being reported, which supports decades of model simulations of mountain formation and evolution regarding the impact of climate on the distribution of deformation associated with plate tectonics.
A team of researchers led by North Carolina State University has made an enormous advance in the understanding of some of Puerto Rico's most remarkable ecosystems by conducting the first comprehensive study of the island's freshwater fish species. NC State's Dr. Thomas Kwak, who led the study, says many of these species "are hidden gems that have been largely ignored," and calls the research "a huge first step in conserving and protecting these fish and their habitat."
Scientists have long known that life can exist in some very extreme environments. But Earth continues to surprise us.
UI researchers help to improve carbon measurements in global climate studies
University of Iowa researchers and their colleagues have found a way to improve existing estimates of the amount of carbon absorbed by plants from the air, thereby improving the accuracy of global warming and land cover change estimates, according to a paper published in the Nov. 13 issue of the journal Science.
Washington, DC— Evolution isn't just for living organisms. Scientists at the Carnegie Institution have found that the mineral kingdom co-evolved with life, and that up to two thirds of the more than 4,000 known types of minerals on Earth can be directly or indirectly linked to biological activity. The finding, published in American Mineralogist*, could aid scientists in the search for life on other planets.
Stanford, CA—Scientists may have overcome a major hurdle to calculating how much carbon dioxide (CO2) is absorbed and released by plants, vital information for understanding how the biosphere responds to stress and for determining the amount of carbon that can be safely emitted by human activities. The problem is that ecosystems simultaneously take up and release CO2. The key finding is that the compound carbonyl sulfide, which plants consume in tandem with CO2, can be used to quantify gas flow into the plants during photosynthesis.