Bill Nelson @SenBillNelson
Please join me in welcoming our new Chief Scientist Dr. Kate Calvin to the @NASA family! Tune in for a media Q&A tomorrow at 11am ET on https://t.co/aMg7kq6qsH. — PolitiTweet.org
NASA @NASA
News: Effective today, Dr. Katherine Calvin will be our new chief scientist and senior climate advisor. She'll act… https://t.co/obYcQVulQJ