Training for a race doesn’t just mean plotting your weekly miles and heading out the door. You also have to figure out exactly how to approach each run, so you can maximize the benefits. With a mix of ...

Sign up for the Planet Money newsletter. The world is confusing. Economics can help. Economist Caitlin Myers has a striking explanation for why women are having fewer ...

Economist Caitlin Myers has a striking explanation for why women are having fewer babies: It's the smartphones. Myers and other researchers have been searching for what's behind the sharp drop in ...

Are smartphones causing people to have fewer children? A provocative new working paper explores the persistent drop in birth rates since the... Can smartphones help explain the drop in birth rates?