Five Best Ideas of the Day: February 13, 2020

Air pollution doesn’t respect state borders.

Jim Daley in Scientific American
Surging Pentagon spending won’t make America safer.

William D. Hartung and Ben Freeman in Defense One
A flickering light pattern may spur the brain to fight Alzheimer’s.

Ben Brumfield at Georgia Tech University
There are downsides to trying to appear ethical.

Shoham Choshen-Hillel, Eugene M. Caruso and Alex Shaw at the Harvard Business Review
A new solar-powered desalination approach will help fight the world’s water crisis.

David L. Chandler in MIT News