Stem cell IVF could enable same-sex couples and single parents to have genetically related children. It’s time to think ...

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.

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.