One day in 1950, the great Italian physicist Enrico Fermi was walking to lunch with some scientist friends. The talk turned to life elsewhere in the universe. Surely, someone remarked, there must be ...

A killer game of hide and seek.

Scientists have spotted 'alien' invaders in Milky Way, comprising as many as a quarter of the star clusters in our galaxy, many more than previously thought, says a new study. The report also suggests ...

The enormous interest during the last 10 years in global warming, green politics, and the environment is a hugely positive development. But all too often, young readers view environmental issues ...