Seabird poop plays a surprising role in bringing life to barren islands, spreading nutrients throughout the ocean, and even creating wealth for an ancient human empire.

PLUS:

• The precursors of written language go back a lot earlier than we thought
• Dolphins exposed to the Deepwater Horizon oil spill also more likely to be hit by boats
• From the archives: Canadian astronomer spots a supernova visible to the naked eye
• Quirks Question: How do beavers choose their trees?
• Mapping the universe in three dimensions