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By Meredith Wadman of Nature magazine In December 2010, the US Congress passed the National Alzheimer's Project Act. [More]

By Meredith Wadman of Nature magazine US researchers are concerned that revised guidelines that recommend a minimum size for breeding lab rodents' cages will substantially increase the cost of animal work. The eighth edition of the Guide for the Care and Use of Laboratory Animals, published last year by the US National Academies in Washington DC, is the first to recommend minimum cage sizes for female rats and mice and their litters. [More]

By Meredith Wadman of Nature magazine In a watershed moment for chimpanzee research, the U.S. [More]

By Meredith Wadman of Nature magazine In a watershed moment for chimpanzee research, the U.S. [More]

By Meredith Wadman of Nature magazine The largest and most high-profile chimpanzee research centre in the United States has acknowledged to Nature that 137 infant chimpanzees have been born to federally owned animals under its care since 2000, despite a government moratorium on such births. [More]

By Meredith Wadman of Nature magazine The e-mail that ended one career for Alison Singer, but started another, arrived as she was cooking dinner for her daughters one evening in January 2009. [More]

By Meredith Wadman of Nature magazine The recent finding that women in seven sub-Saharan Africa countries are nearly twice as likely to acquire HIV if they use a popular, long-acting injectable contraceptive, has incensed AIDS researchers. [More]

By Meredith Wadman of Nature magazine The recent finding that women in seven sub-Saharan Africa countries are nearly twice as likely to acquire HIV if they use a popular, long-acting injectable contraceptive, has incensed AIDS researchers. [More]

By Meredith Wadman of Nature magazine Was the case a fluke or a forewarning? Now that a federal judge has thrown out a lawsuit that sought to halt US government funding of research using human embryonic stem cells, scientists who depend on that support are left wondering whether the battle is truly over, or is merely moving on to a different arena. Chief Judge Royce Lamberth of the US District Court for the District of Columbia issued his decision on 27 July, acknowledging a higher court's opinion that overruled a preliminary injunction that he had placed to suspend the funding last August (see 'Trying times' )

By Meredith Wadman of Nature magazine The boy was perhaps seven or eight, although he could have been older: among other things, the disease that afflicts him stunts growth.