Physicist and cosmologist Paul Davies has made an unusual move into the infant discipline of astrobiology. He tells Plus about his interest in the big questions: what is life, how would we recognise aliens - and are they all around us?
The maths of infinite series
  • Where is the next generation? - more bad news for maths education.
  • Can Plus cure crazy scientists? - the science stereotype persists.

Infinities are tricky things and have perplexed mathematicians and philosophers for thousands of years.

Stirring the electoral soup