Cities worldwide dim lights to mark Earth Hour

Cities around the world were turning off their lights Saturday for Earth Hour, with this year's event highlighting the link between the destruction of nature and increasing outbreaks of diseases like Covid-19.

Smart site selection can make hydropower greener

Even though new hydropower dam developments are intended to provide green energy, they can drown areas that are rich in plant and animal species. But this kind of collateral damage can be limited by strategic site selection, ...

These spiders can hear

Ogre-faced spiders, named for their massive eyes, hide during the day and hunt by night, dangling from Florida palm fronds and casting silk nets on insects on the ground and in the air. In addition to their incredible night ...

Scientists find way to track space junk in daylight

Scientists said Tuesday they had discovered a way to detect space debris even in daylight hours, potentially helping satellites to avoid the ever-growing cloud of junk orbiting the planet.

New insights into vitamin A recycling and daytime vision

Many people remember been told as kids when they refused to eat their vegetables that "carrots are good for your eyes." Although parents may not have fully understood it at the time, there is some truth to this. Carrots are ...

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