Stories by Helen Thompson

The development of Chinchorro burial rituals 7,000 years ago in South America coincided with a wet climate and a related population boom

A total of 145 patients has been diagnosed in recent weeks with a strain of the H3N2 animal influenza virus, but it likely has not yet evolved the ability to transmit efficiently between humans

As budget bills line up, federally funded research agencies anticipate postelection panic

Current species losses are just the tip of the iceberg as the effects of habitat loss take time to manifest

The discovery of an apparent DNA-RNA hybrid virus blurs the boundaries between two major groups, and shows that recombination could be an important route of virus evolution