Nature is beautiful, powerful and essential. But nature is not always gentle. The same biological world that gives rise to ...

For now, that goal remains elusive. The lab-grown cells stopped developing at an immature stage. Many hurdles need to be ...

When Dolly the sheep—the first cloned mammal—was born 30 years ago, she became one of the most famous animals in science ...

Thirty years after Dolly the sheep became the first cloned mammal, cloning has evolved from a sci-fi idea into a ...