Podcast: The Smallest Farmers, the Largest Black Hole, and More

David is the Online News Editor of Science.

How are amoeba like farmers? Why do some birds fill their nests with garbage? And how big is the universe's largest black hole? Science's Online News Editor David Grimm chats about these stories and more with Science Podcast host Robert Frederick.

Listen to the ScienceNOW podcast

(or listen to the full Science podcast.)

Listen to more podcasts.