NASA @NASA
Alaska's glaciers are melting, contributing to sea level rise. How much have they changed? Since 2009, our @NASA_ICE campaign has measured ice loss from above. Fly over some of Earth's most dramatic landscapes in the latest episode of #NASAExplorers: https://t.co/bpyy7UpU1W https://t.co/ih2jC2bU56 — PolitiTweet.org