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Microbes may have contributed to Earth’s biggest extinction

Microbes may have contributed to Earth’s biggest extinction
A microbial feeding frenzy may have fueled the biggest mass extinction in Earth's history, new research suggests. The findings suggest that bacteria, with a little help from massive volcanism, produced large quantities of methane, thereby killing 90 percent of life on the planet. Mass extinction About 252 million years ago, more than 96 percent of ocean…
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First comprehensive atlas of human gene activity

First comprehensive atlas of human gene activity
A large international consortium of researchers has produced the first comprehensive, detailed map of the way genes work across the major cells and tissues of the human body. The findings describe the complex networks that govern gene activity, and the new information could play a crucial role in identifying the genes involved with disease. "Now,…
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First Out of Africa – The totally isolated Tribe of the Andaman

First Out of Africa – The totally isolated Tribe of the Andaman
The Andamanese people are the various aboriginal inhabitants of the Andaman Islands, a district of India located in the southeastern part of the Bay of Bengal. The Andamanese have been classified as Negritos, together with a few other isolated groups in Asia by raciologist theories. They are pygmies, and are the only modern people outside…
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When Did Earth’s First Whiffs of Oxygen Emerge?

When Did Earth’s First Whiffs of Oxygen Emerge?
Today's climate change doesn't hold a candle to the chemical warfare waged on Earth more than 2 billion years ago. Before plants discovered the power of photosynthesis, single-celled life survived on chemicals, not sunlight, burning through hydrogen, methane and sulfur, among other yummy compounds. These "anaerobes" that live without oxygen were poisoned when blue-green algae…
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DNA from fossils reveal origin of Norwegian lemmings

DNA from fossils reveal origin of Norwegian lemmings
A new ancient DNA study shows that the Norwegian lemming has a unique history. In contrast to other mammals in Fennoscandia, the Norwegian lemming may have survived the last Ice Age in the far north, sealed off from the rest of the world by gigantic ice sheets. This conclusion is drawn by an international team…
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Vast gene-expression map yields neurological, environmental stress insights

Vast gene-expression map yields neurological, environmental stress insights
A consortium led by scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) has conducted the largest survey yet of how information encoded in an animal genome is processed in different organs, stages of development, and environmental conditions. Their findings paint a new picture of how genes function in the nervous…
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White House Launches New Climate Data Website

White House Launches New Climate Data Website
The White House launched a new effort Wednesday (March 19) to make climate data more accessible to the public. Known as the Climate Data Initiative, the endeavor will bring together on one website all federal climate data, such as flood maps, hurricane tracks and predictions of future sea level rise. The goal is to centralize…
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Burmese Pythons Slither Home from Miles Away

Burmese Pythons Slither Home from Miles Away
Most snakes don't boast strong internal navigation systems, but Burmese pythons have evolved unusually accurate internal maps and compasses that guide them home from many miles away, according to a new report. Burmese pythons — one of the largest species of snakes in the world, capable of growing more than 18 feet (5.5 meters) long —…
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Fuel Cells Could Provide Clues to Spark of Life

Fuel Cells Could Provide Clues to Spark of Life
The origins of life remains one of the greatest mysteries of science. But to simulate the primordial past—and the conditions that could have given rise to the spark of life—some scientists are turning to a technology usually associated with the car of the future: fuel cells. Their usefulness lies in their very basic similarity to…
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Dinosaur-Killing Asteroid Triggered Lethal Acid Rain

Dinosaur-Killing Asteroid Triggered Lethal Acid Rain
The oceans soured into a deadly sulfuric-acid stew after the huge asteroid impact that wiped out the dinosaurs, a new study suggests. Eighty percent of the planet's species died off at the end of theCretaceous Period 65.5 million years ago, including most marine life in the upper ocean, as well as swimmers and drifters in lakes…
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