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Extraterrestrial Life324 articles archived since 1845

Salty Origins for Early Earth Biomolecules

In a study presented at the European Planetary Science Conference in Potsdam, researchers proposed that salt deposits on the early Earth's volcanic coasts enabled the conversion of amino acids into other important molecules for the start of life. Cynthia Graber reports

September 17, 2009

Handedness Could Reveal Aliens

Researchers at the National Institute of Standards and Technology are developing a way to measure the directionality of compounds on other planets--which could reveal the presence of life, because biomolecules tend to twist in only one of two possible directions. Karen Hopkin reports

April 28, 2009
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Scientific American Health & Medicine

Scientific American Health & Medicine