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ScienceDaily: Earth Science News

Vitamin B3 might have been made in space, delivered to Earth by meteorites

Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis. The result supports a theory that the origin of life may have...

Fewer sources for self-cleaning air: Study overturns existing knowledge on nitrous acid, HONO

Up to now, nitrous acid, HONO, was considered one of the most important sources of hydroxyl radicals, OH, which is regarded as the detergent of the atmosphere, allowing the air to clean itself. Sci...

There's something ancient in the icebox: Three-million-year-old landscape beneath Greenland Ice S...

Scientists were greatly surprised to discover an ancient tundra landscape preserved under the Greenland Ice Sheet, below two miles of ice. This finding provides strong evidence that the ice sheet h...

Biologists help solve fungal mysteries, inform studies on climate change

A new genetic analysis revealing the previously unknown biodiversity and distribution of thousands of fungi in North America might also reveal a previously underappreciated contributor to climate c...

Methane climate change risk suggested by proof of redox cycling of humic substances

Disruption of natural methane-binding process may worsen climate change, scientists have suggested, painting a stark warning on the possible effects of gases such as methane -- which has a greenhou...

Study shows lasting effects of drought in rainy Eastern U.S.

This spring, more than 40 percent of the western U.S. is in a drought that the USDA deems "severe" or "exceptional." The same was true in 2013. In 2012, drought even spread to the humid east. But n...

Mars: Meteorites yield clues to Red Planet's early atmosphere

Geologists analyzed 40 meteorites that fell to Earth from Mars to understand the history of the Martian atmosphere. Their new article shows the atmospheres of Mars and Earth diverged in important w...

Air temperature influenced African glacial movements at height of last ice age

Changes in air temperature, not precipitation, drove the expansion and contraction of glaciers in Africa's Rwenzori Mountains at the height of the last ice age, according to research. The results -...

Crucial new information about how the ice ages came about

Scientists have discovered new relationships between deep-sea temperature and ice-volume changes to provide crucial new information about how the ice ages came about. The researchers found, for the...

Significant baseline levels of arsenic found in soil throughout Ohio are due to natural processes

Geologic and soil processes are to blame for significant baseline levels of arsenic in soil throughout Ohio, according to a new study. Every sample had concentrations higher than the screening leve...