1. Is America's aerospace industry regenerating?

2. Sam Enright's guide to recreational math videos on-line.

3. "A good start" -- they should be working for us, not us for them.  And yes I believe in following the science -- the science of expected utility maximization.  They are the ones who do not really believe in science, just their own status within their own branch of science.

4. What kind of Berkeley protest is this?

5. How transmissible is Delta?

6. Bird photography winners.

7. RCT for masking in Bangladesh.