NASA @NASA
Why does climate change matter? Because it's happening, and we're feeling its effects. But there's hope. Dr. Kate Calvin, senior @NASAClimate advisor, explains how we collect data and develop tech to help us understand and prepare for a changing planet. https://t.co/5ugCk9rA5W https://t.co/EytFbA68T2 — PolitiTweet.org