How gophers brought Mount St. Helens back to life in one day

When Mount St. Helens erupted in 1980, lava incinerated anything living for miles around. As an experiment, scientists later dropped gophers onto parts of the scorched mountain for only 24 hours. The benefits from that single ...

How sperm and eggs develop precisely 23 chromosomes each

Researchers at the University of California, Davis have discovered a key tool that helps sperm and eggs develop exactly 23 chromosomes each. The work, which could lead to insights into fertility, spontaneous miscarriages, ...

Scientists identify seventh and eighth bases of DNA

For decades, scientists have known that DNA consists of four basic units -- adenine, guanine, thymine and cytosine. Those four bases have been taught in science textbooks and have formed the basis of the growing knowledge ...

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