Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. What is Bluetooth? – Henry, age 13, Somerville, ...

PALLEKELE, Sri Lanka (AP) — New Zealand backed into the Twenty20 World Cup semifinals when Pakistan could only narrowly beat Sri Lanka in a gripping match on Saturday. Pakistan had to restrict Sri ...

David Autor is a professor at M.I.T. Anton Korinek is a professor at the University of Virginia. Natasha Sarin is the president of the Budget Lab at Yale. David Leonhardt, an Opinion editorial ...

The Trump administration has repealed the scientific determination that underpins the government’s legal authority to combat climate change. By Lisa Friedman and Maxine Joselow Reporting from ...

Winter Storm Fern exposed deep structural fragility in the U.S. power grid, with outages affecting up to a million customers despite years of warnings from reliability watchdogs. Industry ...

Learn the key differences between profit margin and markup, how they are calculated, and their impact on pricing and revenue.