R. Dane Berry

[Barack Obama @BarackObama]

On the 100th anniversary of the Tulsa Race Massacre, we remember all those who were killed and the survivors who bravely continue to share their stories so that we never forget this painful part of our history. Take a moment to learn about what happened: https://t.co/RiqrSpKGNz

[Simone Giertz @SimoneGiertz]

I’M TRYING TO GO TO SPACE & you can help me get there!

If you retweet this video, I’ll print your name on a shirt and wear it in space in your honor ☄️

#inspiration4contest #sendsimonetospace
https://t.co/SvPEQzHmYK

[Michael Nielsen @michael_nielsen]

What are the classics of the "Science of Science" or "Meta Science"? If you were teaching a class on the subject, what would go in the syllabus?