text: When I was 14, I went to the 1st  #EarthDay in D.C. In those days, it was all about pollution. Today, it’s climate change - and the pandemic. Every astronaut, cosmonaut &amp; taikonaut comes down &amp; reminds us we are all citizens of one world, one planet. It’s up to us to preserve it! https://t.co/SN1UWAVwNZ