Podcast: Toxic Rats, the Benefits of Twins, and a Black Hole's Destiny

David is the Online News Editor of Science.

Why do women have twins? How is a small rat killing large dogs in East Africa? And what is the fate of the first black hole discovered? Science's Online News Editor David Grimm chats about these stories and more with Science's Kerry Klein.

(Listen to the full Science podcast and more podcasts.)

Posted in Evolution, Plants & Animals, Space podcast