Ecology articlesResearchers confirm discovery of earth's inner, innermost core
Geologists at the University of Illinois have confirmed the discovery of Earth's inner, innermost core, and have created a three-dimensional model that describes the seismic anisotropy and texturing of iron crystals within the inner core.
Unexpected nutrient found key to ocean function
Researchers at Oregon State University have discovered what could be a new, limiting nutrient in the world's oceans.
Satellites can help arctic grazers survive killer winter storms
Rain falling on snow sounds like a relatively harmless weather event, but when it happens in the far north it can mean lingering death for reindeer, musk oxen and other animals that normally graze on the Arctic tundra.
Under the sea
For the first time scientists have mapped the layers of once molten rock that lie beneath the edges of the Atlantic Ocean and measure over eight miles thick in some locations.
Wind patterns could mask effects of global warming in ocean
Scientists at the University of Liverpool have found that natural variability in the earth's atmosphere could be masking the overall effect of global warming in the North Atlantic Ocean.
How iron gets into the north pacific
Most oceanographers have assumed that, in the areas of the world's oceans known as High Nutrient, Low Chlorophyll (HNLC) regions, the iron needed to fertilize infrequent plankton blooms comes almost entirely from wind-blown dust. Phoebe Lam and James Bishop of the Earth Sciences Division at the Department of Energy's Lawrence Berkeley National Laboratory have now shown that in the North Pacific, at least, it just ain't so.
Antarctic ice shelf disintegrating as result of climate change
Satellite imagery from the University of Colorado at Boulder's National Snow and Ice Data Center shows a portion of Antarctica's massive Wilkins Ice Shelf has begun to collapse because of rapid climate change in a fast-warming region of the continent.
Buried treasure: proceed with caution
Locked beneath the world's ocean floors, sealed off by low temperatures and high pressure, lies a frozen reservoir of natural gas that could one day help satisfy the world's ever-growing demand for energy.
Uncovering the mechanisms of lightning varieties
The mechanism behind different types of lightning may now be understood, thanks to a combination of direct observation and computer modeling reported by a team of researchers from New Mexico Tech and Penn State.
Coral reefs and climate change: microbes could be the key to coral death
Coral reefs could be dying out because of changes to the microbes that live in them just as much as from the direct rise in temperature caused by global warming.
Study heats up 'snowball earth' debate
Peltier developed a climate model that casts doubt on the popular "snowball Earth" hypothesis, a theory that posits the Earth was completely covered in ice and photosynthesis ceased during the late Neoproterozoic period.
Scientists uncover the source of an almost two billion year delay in animal evolution
A deficiency of oxygen and the heavy metal molybdenum in the ancient deep ocean may have delayed the evolution of animal life on Earth for nearly two billion years.
Continents loss to oceans boosts staying power
New research suggests that the geological staying power of continents comes partly from their losing battle with the Earth's oceans over magnesium. The research finds continents lose more than 20 percent of their initial mass via chemical reactions involving the Earth's crust, water and atmosphere. Because much of the lost mass is dominated by magnesium and calcium, continents ultimately gain because the lighter, silicon-rich rock that's left behind is buoyed up by denser rock beneath the Earth's crust.
Emission reduction assumptions for carbon dioxide overly optimistic
Reducing global emissions of carbon dioxide (CO2) over the coming century will be more challenging than society has been led to believe, according to a new research commentary appearing April 3 in Nature.
'Black gold agriculture' may revolutionize farming, curb global warming
Fifteen hundred years ago, tribes people from the central Amazon basin mixed their soil with charcoal derived from animal bone and tree bark. Today, at the site of this charcoal deposit, scientists have found some of the richest, most fertile soil in the world. Now this ancient, remarkably simple farming technique seems far ahead of the curve, holding promise as a carbon-negative strategy to rein in world hunger as well as greenhouse gases.
Specially designed soils could help combat climate change
A team from Newcastle University aims to design soils that can remove carbon from the atmosphere, permanently and cost-effectively.
Regional nuclear conflict would create near-global ozone hole
A limited nuclear weapons exchange between Pakistan and India using their current arsenals could create a near-global ozone hole, triggering human health problems and wreaking environmental havoc for at least a decade, according to a study led by the University of Colorado at Boulder.
World's oldest living tree discovered in sweden
Dutch chemist Kees Baldé has demonstrated that hydrogen can be efficiently stored in nanoparticles. This allows hydrogen storage to be more easily used in mobile applications. Baldé discovered that 30 nanometre particles of the metal hydride sodium alanate make the favourable extraction and storage of hydrogen possible.
Tiny tremors can track extreme storms in a warming planet
Data from faint earth tremors caused by wind-driven ocean waves—often dismissed as "background noise" at seismographic stations around the world—suggest extreme ocean storms have become more frequent over the past three decades, according to research presented at the annual meeting of the Seismological Society of America.
A grand canyon as old as the dinosaurs?
The origin of the Grand Canyon has been a topic of scientific controversy for nearly 140 years. Now, with geochronologic data from the canyon and surrounding plateaus, geologists from the California Institute of Technology present significant evidence that lends new insight into its history of formation.