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Earth & Environment

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environmental exposures

ENVIRONMENTAL EXPOSURES  Things people come in contact with every day, such as pesticides, chemicals in water, hormone-mimicking chemicals in cash register receipts, smoke and air pollution, can change chemical tags on DNA and proteins. What those changes mean and how useful they are for determining health risks aren’t yet clear.

quasicrystal

QUIRKY CRYSTAL  A new type of quasicrystal (enlarged, right) has been discovered inside a fragment of a Russian meteorite (left), as seen in this backscattered electron image.

solar panels

Solar panels are about to break even on their energy usage and greenhouse gas emissions.

Earth & Environment

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