Powerful solar flare causes blackout in parts of the US

‘Ring of Fire’ Solar Eclipse Will Be Visible in Parts of South America

These 3D-printed pipes inspired by shark intestines outperform Tesla valves -- "Prototypes control fluid flow in a preferred direction with no need for moving parts."

The brain regions that make us human also leave us vulnerable: The cells most vulnerable to age-related decline are clustered together in the parts of the brain that have largely expanded in humans since our evolutionary divergence from chimps.