Live HD Earth viewing from the International Space Station! Go full screen, sit back, watch and enjoy our home planet. Live views: http://go.nasa.gov/2oBrDS2 | NASA - National Aeronautics and Space Administration

How do we know the climate is changing? Scientists have been studying our planet for more than a century. NASA uses a combination of observations and modeling to monitor how Earth is changing and understand the drivers of climate change. Dr. Kate Calvin, NASA’s chief scientist and senior climate advisor, gets into the details. Video Description: Voice over of Dr. Kate Calvin throughout. The video cuts between different data visualizations, footage of Earth from space, and Dr. Kate Calvin in a st