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Tag Archives: Life

Site of asteroid impact changed the history of life

An asteroid, also known as the Chicxulub Impactor, hit Earth some 66 million years ago, causing a crater 180 km wide. The impact of the asteroid heated organic matter in rocks and ejected it into the atmosphere, forming soot in the stratosphere. Soot is a strong, light-absorbing aerosol that caused ...

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Mars study yields clues to possible cradle of life

The discovery of evidence for ancient sea-floor hydrothermal deposits on Mars identifies an area on the planet that may offer clues about the origin of life on Earth. A recent international report examines observations by NASA’s Mars Reconnaissance Orbiter (MRO) of massive deposits in a basin on southern Mars. The ...

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Reconstructing life at its beginning, cell by cell

After 13 rapid divisions a fertilized fly egg consists of about 6,000 cells. They all look alike under the microscope. However, each cell of a Drosophila melanogaster embryo already knows by then whether it is destined to become a neuron or a muscle cell — or part of the gut, ...

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Drinking coffee could lead to a longer life, scientist says

Here’s another reason to start the day with a cup of joe: Scientists have found that people who drink coffee appear to live longer. Drinking coffee was associated with a lower risk of death due to heart disease, cancer, stroke, diabetes, and respiratory and kidney disease for African-Americans, Japanese-Americans, Latinos ...

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Higher IQ in childhood is linked to a longer life

Higher intelligence (IQ) in childhood is associated with a lower lifetime risk of major causes of death, including heart disease, stroke, smoking related cancers, respiratory disease and dementia, finds a study published by The BMJ today. It is the largest study to date reporting causes of death in men and ...

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