Warm milk makes you sleepy—peptides could explain why

According to time-honored advice, drinking a glass of warm milk at bedtime will encourage a good night's rest. Milk's sleep-enhancing properties are commonly ascribed to tryptophan, but scientists have also discovered a mixture ...

Nobel in chemistry honors 'greener' way to build molecules

Two scientists won the Nobel Prize in chemistry Wednesday for finding an ingenious and environmentally cleaner way to build molecules—an approach now used to make a variety of compounds, including medicines and pesticides.

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