Clouds are more than water and a muse. They play an important role in regulating the temperature of the planet. Now NASA's new GLOBE Observer app makes it easy for us all to be guardians of the planet.
The population of African penguins has dwindled drastically over the past three decades, mostly as a result of human activity. Now humans are stepping in to try to save them from extinction. BirdLife South Africa plans to build a new colony for the animals.