Researcher uses bacteria to make radioactive metals inert

The Lost Orphan Mine below the Grand Canyon hasn't produced uranium since the 1960s, but radioactive residue still contaminates the area. Cleaning the region takes an expensive process that is only done in extreme cases, ...

DNA reveals new clues: Why did mammoths die out?

Why did mammoths and other large mammals of the tundra suddenly become extinct some 10,000 years ago? It's a question that has divided scientists over the years. Now researchers from Lund University in Sweden (and 30 other ...

Researchers uncover earliest tobacco use in the Pacific Northwest

(Phys.org)—Native American hunter-gatherers living more than a thousand years ago in what is now northwestern California ate salmon, acorns and other foods, and now we know they also smoked tobacco—the earliest known ...

Engineers repurpose wasp venom as an antibiotic drug

The venom of insects such as wasps and bees is full of compounds that can kill bacteria. Unfortunately, many of these compounds are also toxic for humans, making it impossible to use them as antibiotic drugs.

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