The disease affected millions, but to this day has not been satisfactorily explained. The symptoms were pretty distressing.

During a solar eclipse, Galapagos tortoises show strange and fascinating behaviour. They mate, lift their heads, and seem to stare at the sky. Scientists say this rare reaction highlights how cosmic ...

41P/Tuttle-Giacobini-Kresak is now known to be in the Jupiter family of comets, going from a little inside Jupiter's orbit to almost as far as Earth on its 5.4-year orbit. It is notable for its large ...