Blood test may find markers of bladder cancer risk Exposures to harmful substances in the environment alters the methylation of DNA, potentially elevating the risk of developing cancer. A new blood test can detect the abnormal pattern of methylation associated with bladder cancer, suggesting that it may be possible to assess a person’s susceptibility to […]

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Species loss tied to ecosystem collapse and recovery Geologists at Brown University and the University of Washington have a cautionary tale: Lose enough species in the oceans, and the entire ecosystem could collapse. Looking at two of the greatest mass extinctions in Earth’s history, the scientists attribute the ecosystems’ collapse to a loss in the […]

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