They also "sweat" to cool their leaves.
A cleaner atmosphere might lead to a warmer planet.
A new study offers fresh insights.
According to NASA, last year was the warmest on record without an El Niño boost.
This could devastate already delicate ecosystems.
Less-productive marine plants will crumble food webs from the bottom up.
There's much to be done in so little time.
The cumulative cost of natural disasters in 2017 was more than $300 billion.
For an increasing number of people living in vulnerable areas, relocation is the only option left.
If we meet the Paris climate targets, we'll still have a water problem.
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