As well as being unethical, animal models of pain are simplistic and fail to replicate the multi-dimensional experience of human pain with its complex genetic, biological and psychological aspects.

The etchings of men and animals on the rocks of the Burrup Peninsula, some of which are believed to be up to 30,000 years old, lie in Western Australia's remote and mineral-laden Pilbara region.

Visitors walk near the newly exposed ruins of an 11th-century church, which had been the only visual evidence of the village of Sant Roma, Spain, on April 6 (top).

Genome may yield clues about evolution and disease prevention.new research proves that the oddness of the platypus' looks isn't just skin-deep. Platypus DNA is an equally cobbled-together array of avian, reptilian and mammalian lineages that may hold clue

Tiny marks on the teeth of an ancient human ancestor known as the "Nutcracker Man" may upset current evolutionary understanding of early hominid diet.

ScienceDaily (Apr. 29, 2008) -- Researchers discovered a legless lizard and a tiny woodpecker along with 12 other suspected new species in Brazil's Cerrado, one of the world's 34 biodiversity conservation hotspots.

A huge cluster of ancient rock drawings has been discovered in northern China's Inner Mongolian Autonomous Region. Through the help of local herdsmen, the over one thousand drawings from the Bronze Era were discovered

MANILA (AFP) - A rare rat species last seen over a century ago in the mountainous northern Philippines has been rediscovered by a team of American and Filipino biologists, a report said Sunday

In the first experiment involving a natural environment, scientists at Brown University have shown that richer plant diversity significantly enhances an ecosystem's productivity

The Mozilla corporation, creator of the superb Firefox web browser, has declared their software to be 100% organic