Dark skies do more than just inspire us. Having bright days and dark
nights is important to keeping our body chemistry (and that of plants
and animals) in balance. How bright are the city lights where you live? Scientists would like you to tell them.
What's the secret to being happy? The New York Times and the Gallup polling organization say your chances are best if you belong to certain groups and make certain lifestyle choices. One man in the US combines the best such qualities. Find out who it is.
The city is extending its smoking ban from bars and restaurants to local parks, beaches and pedestrian areas. This will mean cleaner air in Central Park, at Coney Island and even at Times Square. Those who light up anyway will have to pay a $50 fine.
Researchers at the Roslin Institute at the University of Edinburgh have found a way to stop avian influenza, or bird flu, from spreading among chickens. They haven't made a vaccine; instead, they've created a new kind of chicken with modified genes.
There was "a genuine belief ... that if we liberalized our laws, we would suddenly develop a responsible drinking culture like France or Spain," said Gerard Vaughan of New Zealand's Alcohol Advisory Council. Parliament is now considering tougher laws on alcohol sales.