A surprising finding shows that light can make water evaporate without heat could enable new approaches to desalination

A new study says that Mycobacterium tuberculosis bacteria thrive in dew drops. Credit: Pixabay/CC0 Public Domain

Evaporation is happening all around us all the time, from the sweat cooling our bodies to the dew burning off in the morning sun. But science’s understanding of this ubiquitous process may have been missing a piece all this time.

In recent years, some researchers have been puzzled upon finding that water in their experiments, which was held in a sponge-like material known as a hydrogel, was evaporating at a higher rate than could be explained by the amount of heat, or thermal …

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