EPA proposes rewrite of rules on lead contamination in water

The Trump administration on Thursday proposed a rewrite of rules for dealing with lead pipes contaminating drinking water, but critics say the changes appear to give water systems decades more time to replace pipes leaching ...

Purple martin migration behavior perplexes researchers

Purple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, as scientists plan to track their roosting sites along the way.

Breakthrough in electrocatalysts reported

Recently, the group of Professor Guo Shaojun in College of Engineering at Peking University developed a novel type of sub-nanometer, highly curved PdMo nanosheet—due to its structural analogy with graphene, it was denoted ...

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