Five Best Ideas of the Day: August 4, 2017

Here’s how hairstylists can help fight domestic violence.

Caitlin Moscatello in the Cut
Are we overusing sanctions as a foreign policy tool?

Robert Kahn at the Council on Foreign Relations
Most of those billion dollar startups are fooling themselves — and us.

Julie VerHage at Bloomberg Technology
Have smartphones undermined a generation?

Jean M. Twenge in the Atlantic
This collapsible solar lantern is saving refugee lives.

Rina Raphael in Fast Company