This article was originally featured on The Conversation. Sourdough is the oldest kind of leavened bread in recorded history, and people have been eating it for thousands of years. The components of ...

Nanotube bridge networks grow between the most abundant photosynthetic bacteria in the oceans, suggesting that the world is far more interconnected than anyone realized. Biologists once thought of ...

The original version of this story appeared in Quanta Magazine. Prochlorococcus bacteria are so small that you’d have to line up around a thousand of them to match the thickness of a human thumbnail.