Conservation of energy isn’t just a good idea: It is the law. In particular, it is the first law of thermodynamics. But, apparently, a lot of people don’t really get that because history is replete ...

While the idea of strapping your gear to your back is older than we can say, the modern student backpack is quite young—only about 44 years old—and has seen many new fads and changes in a short amount ...

Modern wars show how easily leaders meet rhetorical burden of justification and avoid strategic burden of ending them.

Premieres Wednesdays, April 3 - May 8, 2024 at 9 p.m. on KPBS TV / PBS App + Encores Sundays, April 7 - May 12 at 9 p.m. on KPBS 2 This non-fiction documentary series will help viewers imagine – and ...

Add Yahoo as a preferred source to see more of our stories on Google. Welcome to Foreign Policy’s China Brief. This week, we’re taking a step back from the news cycle to explore the rich history of ...

As far back as the 16th century, people have speculated on the existence of planets orbiting other stars. For much of human history, however, and right through to the last decade of the 20th century, ...