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Earth

Salty water power

A study reports a new, cheaper way to harvest energy from salt water and fresh water.

Paleontology

Fossil shows first all-American honeybee

Nevada find contradicts long-held view of Europe and Asia as the native land of all honeybees.

Animals

Toucan’s bill gives big chill

Bird’s supersized bill can switch personal air conditioning on and off, new research suggests.

Humans

Traffic hydrocarbons linked to lower IQs in kids

Prenatal exposures to common air pollutants correlate with a drop in intelligence scores.

Life

Beetle masters optics

Researchers may gain inspiration from the shell of Chrysina gloriosa, which twists light in a particular way.