Prism

In a surprising medical case in Spain, a 60-year-old man who was initially suspected of having metastatic brain cancer was instead found to be infected with tapeworm larvae.

Apple has blocked two key Russian apps—VKontakte and Max—from its App Store, effectively making them unavailable for new installations on iPhones in Russia.

A long-standing physics question about why kinetic energy increases with the square of speed, rather than linearly, has been addressed with fresh intuitive arguments.