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Life

‘Nanobot’ viruses tag and round up bacteria in food and water

Viruses called phages evolved to hunt bacteria. With magnetic nanoparticles and genetic engineering, they become nanobots that work for us.

Planetary Science

Water may have killed Mars’ magnetic field

Extra hydrogen near the Red Planet’s iron core could have shut down convection.

Neuroscience

When tickling the brain to stimulate memory, location matters

Conflicting results regarding the benefits of brain stimulation may be explained by the precise location of electrodes.

Anthropology

Modern chimp brains share similarities with ancient hominids

MRIs suggest certain brain folding patterns don’t mark ancient humanlike neural advances after all, raising questions about hominid brain evolution.