Wednesday assorted links

1. How do Greenland sharks live for 400 years? (NYT)

2. John Cochrane on AI regulation.  Trenchant.

3. Uh-oh.  Which Commandment was broken here?

4. Have economists gone out of fashion in Washington?

5. Another look at Harriet Martineau.

6. Speed record smashed on the Appalachian trail.