In addition to consuming CO2, phytoplankton can influence how much heat is absorbed by the world's oceans, and some species emit sulfate molecules that promote cloud formation.

Large parts of the mountainous island are swathed in cloud. These lush and mossy forests are home to the colorful Hawaiian honeycreeper, an endangered bird species.

Running along the border separating Peru and Ecuador, the Cordillera del Condor's spectacular cloud forests host a raft of rare and endangered species.