Antibiotic Resistance Genes Found in a Colorado River System

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The pristine Platte river picks up microbial genes for antibiotic resistance as it flows past human settlements. Image: Philip Nealey/Getty

In the Rocky Mountains, the South Platte River system flows east through the Coloradan plateau that has plenty cattle ranches, sheep pastures, dairy farms, and water treatment plants. A new survey shows how human activities have affected the concentrations of antibiotic-resistant genes in the watershed.

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Blond Hair of Melanesians Evolved Differently Than Those of Europeans

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A new study of the people from the Solomon Islands in Melanesia, a group of islands northeast of Australia, has shown that blond hair evolved differently, genetically speaking, than in Europeans. About 5-10% of the people in Melanesia have naturally blond hair, which is the highest prevalence outside of Europe.

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Time Spent in Orbit May Alter Astronauts’ Genes

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Scientists discovered that spending long periods of time in low gravity environments might alter genes. In order to complete their experiment, researchers used magnets on Earth to simulate the weightlessness of space.

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