Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Using water flow sensors and plastic "leaves" that measure wetness, biologists have discovered that trees living in tropical montane cloud forests drink through their leaves as well as their roots.

Every year between September and December, Lubna Dada makes clouds. Dada, an atmospheric scientist, convenes with dozens of her colleagues to run experiments in a 7,000-gallon stainless steel chamber ...

Bees and their nectar-loving friends aren’t the only means of transporting pollen long distances. Water molecules grab some wind-strewn pollens and whisk them up into the clouds, where they can become ...