Research teams led by the Wellcome Trust Sanger Institute announce the first comprehensive analyses of cancer genomes.

The world's rarest—and most camera shy—great ape has finally been captured on professional video on a forested mountain in Cameroon, according to the Wildlife Conservation Society and Germany's NDR Naturfilm.

In a developing animal, stem cells proliferate and differentiate to form the organs needed for life. A new study shows how a crucial step in this process happens and how a reversal of that step contributes to cancer.