When the Plane’s Going Down…Tweet?

All stars shine due to an internal source of energy. Usually, it’s nuclear fusion: converting mass into energy. What makes them most bright?

Arendt thought 20th-century philosophy had become too passive and abstract. She called for “active thinking” that prepares us to live in the real world.

In this preview from “The Saucerian,” author Gabriel Mckee explains how the combination of fantastical stories and obscure bureaucracy launched the “space age of the imagination.”

Warren Buffett famously noted that Berkshire Hathaway would “never depend on the kindness of strangers to stay in business.” Startups take note.

If an asteroid hadn’t killed off the dinosaurs, humans would almost certainly have never walked the Earth.