Toilet conference opens in Delhi
A World Toilet Summit has opened in the Indian capital, Delhi, with more than 40 countries taking part

Why men and women argue differently
Women want to talk about it, but men are more likely to retreat into stoney silence. Our correspondent investigates the science behind how we argue

Top 20 Ambulance cars from around the world

Solar energy boom may help world's poorest
Low incomes and low subsidies, if any, can make clean energy a hard sell in developing countries

Create the Future: Entries to NASA's Design Contest
Electricity-producing roads, a zero-energy home and a smart rainwater collector (the last two are pictured above) are just a few of the cool sustainable designs entered in NASA's Create the Future Design Contest.

RIGHTS-EUROPE: 'Non-lethal Weapons' Tackle Protests Against Globalisation
Several European governments are arming their police forces with a new range of "non-lethal weapons" to put down protests against globalisation, and among immigrants.

Who Owns the Arctic?It depends on the shape of the
ocean floor.

The Truth About Deadly 'Superbugs'
Armies of invisible creatures are spreading across the
planet, infesting local communities and claiming the
lives of innocent children in their wake. And the
attackers are immune to some of the world's best weaponry.

Radical Lace & Subversive Knitting, an art show at the Musuem of Arts & Design in New York. A timely exhibition of work by international artists using fiber in unexpected and unorthodox ways.