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Animals

Urchins are dying off across the Caribbean. Scientists now know why

A type of single-celled microorganism associated with coral diseases is behind a sea urchin die-off in the Caribbean.

Neuroscience

The classic map of how the human brain manages movement gets an update

Functional MRI scans provide a new version of the motor homunculus, the mapping of how the primary motor cortex controls parts of the body.

Archaeology

A prehistoric method for tailoring clothes may be written in bone

A punctured bone fragment was probably a leatherwork punch board. Perforated leather sewn together may have been seams in clothing.

Climate

Methane may not warm the Earth quite as much as previously thought

Methane absorbs both longwave and shortwave radiation, with competing effects on climate, a study finds.