Ride for Climate is a US bicycle tour to raise awareness of global warming and encourage action. Starting in Boston on April 21st, two global warming experts will ride across the US, stopping along the way to give presentations on global warming and discuss solutions. One of the riders, David Kroodsma, is a climate scientist who will have just finished an unsupported bicycle tour from California to the tip of South America. Our presentation will discuss the science of climate change, global warming as seen from David's 15,000 mile bicycle ride, opportunities for action, and David and Bill's experience biking across the country.