UN warns against thirsty tech to solve water crisis

The world needs to better manage its freshwater resources but thirsty new technologies touted as solutions could lead to "serious problems" if left unchecked, a UN report warned Friday.

Spectroscopy and theory shed light on excitons in semiconductors

From solar panels on our roofs to the new OLED TV screens, many everyday electronic devices simply wouldn't work without the interaction between light and the materials that make up semiconductors. A new category of semiconductors ...

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