Potential signs of ancient life in Mars rover photos

A careful study of images taken by the NASA rover Curiosity has revealed intriguing similarities between ancient sedimentary rocks on Mars and structures shaped by microbes on Earth. The findings suggest, but do not prove, ...

Injection wells can induce earthquakes miles away from the well

A study of earthquakes induced by injecting fluids deep underground has revealed surprising patterns, suggesting that current recommendations for hydraulic fracturing, wastewater disposal, and geothermal wells may need to ...

New evidence supporting theory of extraterrestrial impact found

An 18-member international team of researchers that includes James Kennett, professor of earth science at UC Santa Barbara, has discovered melt-glass material in a thin layer of sedimentary rock in Pennsylvania, South Carolina, ...

Test shows dinosaurs survived mass extinction by 700,000 years

University of Alberta researchers determined that a fossilized dinosaur bone found in New Mexico confounds the long established paradigm that the age of dinosaurs ended between 65.5 and 66 million years ago.

Poisonous oceans delayed animal evolution

Animals require oxygen, but oxygenated environments were rare on early Earth. New research from University of Southern Denmark shows that poisonous sulfide existed in the oceans 750 million years ago making large areas of ...

Oldest fossils ever found may not be fossils after all

(PhysOrg.com) -- A rock formation in Western Australia was the site of great excitement a couple of decades ago when it revealed evidence of the oldest fossils of bacteria ever found, but a new study casts doubt on those ...

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