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ScienceDaily: Earth Science News

Lack of oxygen delayed the rise of animals on Earth

Scientists have long speculated as to why animal species didn't flourish sooner, once sufficient oxygen covered the Earth's surface. Animals began to prosper at the end of the Proterozoic period --...

They know the drill: Leading the league in boring through ice sheets

Hollow coring drills are used to extract ice cores that can analyze the past atmosphere. Scientists have now documented carbon dioxide in the atmosphere between 23,000 and 9,000 years ago, based on...

Oceans arrived early to Earth; Primitive meteorites were a likely source of water, study finds

Earth is known as the Blue Planet because of its oceans, which cover more than 70 percent of the planet's surface and are home to the world's greatest diversity of life. While water is essential fo...

Magma pancakes beneath Indonesia's Lake Toba: Subsurface sources of mega-eruptions

The tremendous amounts of lava that are emitted during super-eruptions accumulate over millions of years prior to the event in the Earth's crust. These reservoirs consist of magma that intrudes int...

Restoring wetlands can lessen soil sinkage, greenhouse gas emissions, study finds

Restoring wetlands can help reduce or reverse soil subsidence and reduce greenhouse gas emissions, according to research in California's Sacramento-San Joaquin River Delta. The study is one of the ...

Reef-builders with a sense of harmony

Cold-water corals of the species Lophelia pertusa are able to fuse skeletons of genetically distinct individuals. Scientists have made the first-ever discovery of branches of different colors that ...

Urban seismic network detects human sounds

When listening to the Earth, what clues can seismic data reveal about the impact of urban life? Although naturally occurring vibrations have proven useful to seismologists, until now the vibrations...

Ammonium source in open ocean tracked by researchers

To understand the extent to which human activities are polluting Earth's atmosphere and oceans, it's important to distinguish human-made pollutants from compounds that occur naturally. A new study ...

Three abrupt pulses of carbon dioxide during last deglaciation, study shows

The rise of atmospheric carbon dioxide that contributed to the end of the last ice age more than 10,000 years ago did not occur gradually, but was characterized by three 'pulses' in which carbon di...

Clean smell doesn't always mean clean air

Scientists are taking a closer look at aerosol formation involving an organic compound -- called limonene -- that provides the pleasant smell of cleaning products and air fresheners. This research ...