raspberry leaf and microbes

This raspberry leaf (in a closeup, colorized electron micrograph) is covered in a biofilm of bacteria and fungi. Rosmarinic acid may keep bacterial visitors from overtaking a plant.

depression

DARK DAYS  A controversial new study concludes that major depression does not afflict more people during winter months.

forest

LEAFY GREENS  Tinkering with Europe’s forests has increased populations of dark-leafed conifer trees that reflect less sunlight (pine forest in Germany, shown), compared with lighter-colored broad-leaved trees, and so has failed to alleviate climate change, new research shows.

Hubo

A humanoid robot named Hubo uses a mechanical hand to turn a valve at the finals of the DARPA Robotics Challenge in California. 



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