Scientists learn to tell left from right SOME molecules exist in two forms that are chemically identical but are mirror images of each other. These mirror-image pairs frequently have very different biological effects, so chemists would like to find a quick way to tell them apart. A laborious method called chiral chromatography is used at the moment. Mirror-image molecules are separated as … News
Westminster diary RADIOACTIVE iodine is widely used to treat overactive thyroid glands and thyroid cancers. But when a patient becomes radioactive through this treatment, it can pose a health hazard to anyone—such as hospital nurses—who is in close contact with them for long periods. As New Scientist reported recently, a single alpha or beta particle could damage … Opinion
Earth Last chance balloon Why would a small red-and-white balloon rescued from a Victorian shrubbery in the west of England have excited weeks of feverish activity at the Admiralty in London? Because it appeared to have attached to it a message from the doomed HMS Erebus, captained by Sir John Franklin, by then missing for six years in the … Features
Respect for the family Great apes and humans by Benjamin Beck, Smithsonian Institution Press, £26.95, ISBN 1560989696 VOTES for chimpanzees? The Great Ape Project, launched in 1994, didn't go quite that far. Yet that coalition of scientists and philosophers unleashed a bioethical furore when they argued that our closest primate relatives deserve "human" rights. It is morally indefensible, they … Books & Arts
The Last Word Stop thief Question : I have noticed that electrical goods stores use a form of adhesive metal coil as a security tag. How do these tags set off the door alarms and how are they deactivated before a legitimate customer leaves the shop? Answer : The coils are the antennae of a very simple, disposable … Regulars