JELLYFISH

No Brain? For Jellyfish, No Problem
No Brain? For Jellyfish, No Problem

Are brains over-rated? After all, jellyfish lack them, yet carry out sophisticated functions and a complex reproductive cycle. Their lack of a nervous system control center even confers some advantages, such as the ability to lose a chunk here and there with little harm done.

The Dirt: This Week in Nature (September 15-21)
The Dirt: This Week in Nature (September 15-21)

Species of monkey previously unknown to scientists discovered in the Congo, 390 million-year-old mollusk reconstructed in 3-D, and spongy tissue found in human hearts also found in those of reptiles.

The Dirt: This Week in Nature (6/2-6/8)
The Dirt: This Week in Nature (6/2-6/8)

This week's dirt: Trees pop up in the Tundra, dinosaurs not quite as bulky as previously thought, report connects the sizing down of insects with bird evolution, melting arctic could mean colder winters for those in the Northern Hemisphere, and more.