Podcast: Brain Shrinkage, Black Hole Collisions, and Electro-Sensing Dolphins

Why does the human brain shrink with age? Can dolphins sense electricity? And did the Milky Way's black hole collide with another black hole just a few million years ago? 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.)

Follow News from Science

A 3D plot from a model of the Ebola risk faced at different West African regions over time.
Dancing sneakers on pavement
siderailarticle x promo