Stories by J. H.

A broad study of preindustrial societies offers some answers

Doubts remain on "sightings" of planets near other stars

Did a growth spurt of mountain ranges initiate the ice ages?

New findings confirm old ones: it is a 14th-century fake

A remarkable Soviet method for regenerating bones comes west

More sunspots = more sunshine, but is the weather affected?

A puzzling new probe of the cosmic background radiation

Researchers stumble to make stairs safer

Slightly sinister statistics for left-handed people

California artists spawn technological monsters

Researchers seek a vaccine to treat and prevent melanoma

Students attempt to build a human-powered helicopter

Astronomers spot a pulsar with a "bizarre" companion

An experiment demonstrates how buried rocks rise

Making stars explode in a computer is a tricky task

Drawing or sculpting can help traumatized Vietnam veterans

Sea-launched cruise missiles elude arms controllers

Jupiter's great red spot is conjured up in laboratories

Physicists generate durable pulses of darkness

The embryonic forms of ancient reptiles are revealed

A new insecticide causes insects to kill themselves

Can black holes, like supernovas, make elements?

Does it act more as a trap than as a safety net?

Fiber-optic sensors may speed the analysis of human blood