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Scientists say they have, for the first time, cloned human embryos capable of producing embryonic stem cells.The accomplishment is a long-sought step toward harnessing the potential power...
A site in China contains 190-million-year old organic remains from non-avian dinosaurs and dinosaur embryos, and some of the world’s oldest known eggshells, according to a new study.The...
Two years ago, Mike Archer from the University of New South Wales looked down a microscope and saw that a single fertilised frog egg had divided in two. Then, it did it again. And again....