Virgin Galactic unveils supersonic airplane concept with Boeing & Rolls-Royce as supporters
Virgin Galactic says it has signed a non-binding memorandum of understanding with Rolls-Royce
Sperm fooled scientists for 350 years – they spin not swim
Sperm was first discovered in 1677 but it took roughly 200 years before scientists agreed on how humans are actually formed
Non-magnetic material made magnetic using electricity for the first time
The material in question is pyrite, also known as iron sulfide or “fool’s gold”
