Plants draw water up and out through their leaves. Scientists have figured out how to duplicate the minute structure of a plant to use this anti-gravity process to our advantage. It can be used to humidify, purify and modified to disperse heat.
[Source: Science Daily]
Plants also scrub carbon dioxide out of the air. A scientist wants to develop huge air filter "trees" that will trap CO2. What to do with it once captured seems to be the sticking point.
[Source: BBC News]
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