In a lab in Japan, scientists transformed cells from the tails of male mice into eggs. They fertilized the eggs with ordinary mouse sperm and implanted them in surrogate mouse moms. The experiment was ...

TUCSON― Conservation groups and the U.S. Forest Service reached an agreement today to protect meadows and streams in eastern Arizona’s White Mountains from cows and horses. The riparian areas are home ...

ORANGE COUNTY, Calif.— As the Trump administration steps back from protecting imperiled animals, the Center for Biological Diversity today filed a petition to protect the Pacific pocket mouse under ...

Using embryonic stem cells and gene editing, healthy mice have been bred from two mothers for the first time. The bimaternal mice not only lived into adulthood, they successfully reproduced with male ...