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By Heidi Ledford of Nature magazine Three common chemotherapy drugs cause DNA mutations not only in mice that receive treatment, but also in their offspring, according to a study published today in the Proceedings of the National Academy of Sciences USA . The results suggest that the genome in treated mice became destabilized yielding new mutations long after exposure to the drugs has ceased. [More]

In 2009, researchers from the biotechnology company Oxitec released over 18,000 genetically modified mosquitoes in a bid to reduce the wild mosquito population. The mosquitoes were designed so that in theory, when these modified male mosquitoes mate with wild females, the offspring would be infertile .

In high school, my mother occasionally found babysitting jobs for me. Parents, desperate for a trustworthy kid to watch their own, would entrust their offspring to Katie the honors student while they went to a meeting, or to work, or perhaps on a date. If any of those parents are reading, I have a confession for you: I didn't like watching your kids

By Zo

A new mother’s body goes through many changes--among them, key parts of her brain get bigger, according to research reported in October’s Behavioral Neuroscience .