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Many regulatory sequences in the human genome are not conserved

A new book explores the mystery and symbolism of the early days of chemistry

The editor of Fertility and Sterility apologizes for damaging remarks to The Scientist about a controversial paper

The proposal, one month before Sydney hosts a major AIDS conference, has angered AIDS researchers and advocates

Primitive beginnings of a nervous system in animals without one hint at the origins of the synapse

Researchers successfully reprogram fertilized mouse eggs, producing both embryonic stem cells and cloned animals

Scientists debate whether the decision, which makes a 12-year-old moratorium permanent, will affect biomedical research

Following years of protest, the publisher of The Lancet, Cell, and other high-profile journals plans to stop organizing arms fairs

With a chemist and zoologist running the country, will local science reap any benefits?

William Calezon's group purifies salvinorin A from bags of dried Salvia divinorum bought off the Internet." />William Calezon's group purifies salvinorin A from bags of dried Salvia divinorum bought off the Internet. For Karen Schrock, it started with a big hit off a smoking pipe filled with Salvia divinorum and a crash to the kitchen floor. From there she was off to an alien world of silhouetted figures who lived by a complex social structure. Any sense that there had ever been

When the English racing driver Lewis Hamilton finished third at Formula One's Australian Grand Prix in March, it made him the first rookie driver to reach the podium since Canada's Jacques Villeneuve managed it 11 years before. During the race, commentators praised Hamilton's finesse and confidence as he steered his silver McLaren Mercedes through the streets of the Albert Park circuit, south of Melbourne. A few, notably racing legend Jackie Stewart, mentioned the extensive tra

Credit: Courtesy of Janeet Stocks" /> Credit: Courtesy of Janeet Stocks On the first day of school after spring break, nine British children had an unusual tale to tell regarding "what I did on my vacation": They climbed Mount Everest. At least part of it, that is. Ranging in age from 6 to 13 years, the kids were part of an expedition that Janet Stocks led. As a professor of respiratory physiology at University College London, Stocks designed a study to investigate how