HumansSame-sex attraction isn't an evolutionary paradox - here's why Our explanations for how same-sex attraction evolved are wrong – it's the spectrum of sexuality that is important, says Andrew Barron Comment
SpaceMartin Rees: We will become a new species by expanding beyond Earth Heading into deep space will lead to a new species of human evolving, says the UK Astronomer Royal - and could pave the way to immortals who can conquer the galaxy Comment