Videos

Climate change can be tackled using a very simple idea – divestment. It means taking your money away from companies involved in extracting fossil fuels. Here, Guardian journalist and US author Bill McKibben explains where the idea came from; why it's been central to any environment solution; its successful application in history; and the extent to which this exciting socially-driven movement will help add crucial pressure for change on business leaders and politicians the world over.

Wind, solar, geo-thermal, tidal, and biomass are all here in Alaska, in abundance. However, one challenge to integrating renewable energy into the grid is what to do about the inherent variability of renewables. One Alaskan alternative energy expert has uncovered the solution — The Eklutna Lake Pumped Hydro Project.

Here’s how to win over Republicans on renewable energy.