Wilted leaves during drought

Wilted tree leaves in a Hawaiian forest during the extreme drought of 2010-11, which was the worst in at least 11 years and was federally designated a natural disaster.The tree is an alahee (Psydrax odorata).
Droughts are increasing worldwide, and UCLA life sciences research shows how to predict which species will be most sensitive.
(Credit: Faith Inman-Narahari)

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