DRINK UP Astronauts drink water made from recycled urine and other wastewater aboard the International Space Station. A new system would turn pee into drinking water and produce energy, a step toward long-term space travel.
Peeing in the pool creates chemicals toxic enough to be classified as chemical warfare agents. But they’re not the deadliest risk you face in swimming.
A man throws a rock toward Israeli border police on the West Bank of the Palestinian territories. A new study by forensic scientists in Israel outlines methods to identify a person’s fingerprints on stones.