Blood-forming stem cells are able to count and store memories of the number of times that they divide, findings which could have major implications for disease research, scientists have found.

For the first time, scientists said Thursday that they had bred mice with two genetic fathers, steering around biological hurdles that would otherwise prevent same-sex parents from having offspring.

International scientists set up a rescue plan for the last three northern white rhinos (Ceratotherium simum cottoni) on Earth. The goal is to use the remaining three rhinos and tissue samples from ...