Scientists, environmentalists and native villagers express hope that a legal hunt could rein in rampant poaching.

What happens to a species when its habitat contracts, how to bend a crystal and a gaseous mystery explained.

Chimpanzees invite comparison with humans, their close relatives, and certain similarities between the two species go beyond expressive faces and opposable thumbs.

Several recent experiments suggest that animals can visit the past and future in their minds, in ways similar to humans.

Scientists studying marmosets have discovered that over half the males carry their brother's sperm.

Eating the meat of the capybara, reputed to be the world's largest rodent, has a status in Venezuela similar to that of turkey during Thanksgiving.

Dr. Frans de Waal argues that human morality would be impossible without certain emotional building blocks that are clearly at work in chimp and monkey societies.

Because we ask the ultimate sacrifice of the animals we eat, it is incumbent on us to ensure that they have decent lives.