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Life

Engineering better hair transplants

Cell-based approach to new follicles takes hold in skin.

Life

Daytime anesthesia gives bees jet lag

Honeybees, as stand-ins for surgery patients, show drug’s aftereffects as biorhythms get out sync.

Chemistry

Scientist fiddles with spider silk

Bundled and processed, the sturdy filaments yield a soft, rich sound on the violin.

Humans

Highlights from the American Association of Physical Anthropologists annual meeting, Portland, Ore., April 11-14

Shorts on Stone Age finds in Southeast Asia, chatting among Neandertal ancestors and early cannibalism.

Humans

Ancient walking gets weirder

Fossil footprints and bones suggest variations among human ancestors in upright gait and stance.

Physics

Computers’ inability to find physical laws is a clue to math’s relationship to reality

Life

Underground resistance

Cave bacteria’s ability to fight antibiotics predates human-made drugs.

Animals

Chimps show lethal side

A collaborative scientific effort offers an inside look at ape homicides.

Physics

Long-sought particles possibly glimpsed

Majorana fermions, which are their own antiparticle, could one day be useful in quantum computing.

Life

Baboons show their word skills

Monkeys learn to distinguish words from nonwords, suggesting ancient evolutionary roots for reading.

Health & Medicine

Movie clips help ease drug craving

Images of heroin may prove useful in treating addiction.

Physics

Insects covered in tough stuff

Locust exoskeleton could inspire new, fracture-resistant materials.