News
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LifeHow to tell good gut microbes from bad
Researchers sort out influences of specific bacteria on body fat, the immune system.
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AnimalsMantis shrimp’s bizarre visual system may save brainpower
The mantis shrimp sees each color separately with one of a dozen kinds of specialized cells, a system that may help the animal quickly see colors without a lot of brainpower.
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Planetary ScienceOld rover finds new evidence of water on Mars
Opportunity’s analysis of rocks at Endeavour crater reveals chemistry that could have supported life.
By Meghan Rosen -
PhysicsLaser builds mirror by pushing beads together
The light technique may one day be used to build giant telescopes in space.