Archaeology

A bone tool embedded in a mastodon rib suggests humans were hunting big game earlier than thought.

Harvard psychologist Steven Pinker talked about the thesis of his new book, The Better Angels of Our Nature: Why Violence Has Declined, at the ScienceWriters2011 conference in Flagstaff on October 17. Steve Mirsky reports

'Experiment' raises alarm among social scientists.

Participants in the 1000 Genomes project reconstruct the genetic variation of a lost group of Native Americans.

Researcher suggests odd arrangement of marine fossils was stockpiled by enormous, tentacled beast.

Scientists are sending in unmanned aircraft to survey remote ares

Geologists say newfound deposits in the embattled country could fulfill the world's desire for rare earth and critical minerals and end opium's local stranglehold in the process

New 3-D software is helping scientists identify the sex and ancestral origins of human remains with greater speed and precision

An exhibition traces the reconstruction of a long-missing collection of writings by Archimedes

A maverick aristocrat's ideas about dinosaur evolution turn out to have been decades ahead of their time

Vast deposits of rare earth and critical minerals found in Afghanistan by U.S. geologists under military cover could solve world shortages and get the country off opium and out from under Taliban control. Photos show their gutsy excursions