Climate scientist measures ice melt

With a population of over one billion, serious air pollution and health problems arise from cooking smoke produced in traditional ways in India. A new 'simple stove' is reducing emissions and giving villagers carbon credits for making the switch to a cleaner way of burning fuel.

We hear from climate scientists about their astounding discovery of the 'atmospheric brown cloud' in the late 1990s. The scientists used high tech equipment including former military drones to prove the existence of this potentially catastrophic phenomenon which is warming the atmosphere while cooling the ocean.

The climate scientists are measuring the thickness of the ice on top of the Himalayan glacier lakes. In this clip we also see some shocking footage of a flood caused by a glacier lake outburst that killed dozens of villagers with no warning whatsoever. The concern is that climate change may cause more of these devastating floods.