What came first, bigger brains or lots of sex? LOW fertility and frequent pregnancy complications may be the price that we have paid for evolving a large brain. For the fetus to get enough nutrients to grow a hefty brain the placenta has to aggressively invade a mother's uterus, says a new theory. But that can also provoke her immune system, causing dangerous complications. … News
Only as a last resort COUNTRIES that want to see how debate over animal experiments is likely to develop should keep an eye on Britain. It has one of the world's strictest systems for deciding what can and can't be done to living creatures in the name of science. It also has one of the most active animal rights movements, … Opinion
Riddle of the giant tooth When the Gulf of Siam docked in Sydney in May 1892, the ship's surgeon signed off. Robert Broom, a young doctor from Glasgow, was about to start a new life in Australia. Hidden in his luggage, away from the prying eyes of customs officers, were two rifles and enough ammunition to shoot the animals he … Features
Bestsellers - Berkeley Hidden Connections by Fritjof Capra, Doubleday Dr Tatiana's Sex Advice to All Creation by Olivia Judson, Metropolitan Books A New Kind of Science by Stephen Wolfram, Wolfram Media Seeing in the Dark by Timothy Ferris, Simon and Schuster Linked: The new science of networks by Albert-Lázsló Barabási, Perseus The Structure of Evolutionary Theory by Stephen … Books & Arts
Feedback THANKS to what the US Department of Defense calls "advancements in digital audio technology", America's military funerals will soon sound much better. Aficionados of Westerns should recognise the plaintive strains of Taps, the bugle call played at sunset on army posts, and at military funerals as well. But the armed forces don't have enough real … Regulars