Quantum wormholes are mathematically possible — but might also be physically impossible. Physicist Janna Levin explains Hawking’s famous information paradox.
The knobby starfish skeleton has diamond-like properties and could inspire new designs for lightweight, highly resilient ceramics, with widespread applications in engineering and construction.
A unique combination of DNA and silica is the strongest known material for its density (but you’ll need a lot of it before you can build a suit from it).