World’s oldest trees reveal the largest solar storm in history

A mathematically correct way to tie your shoes

The deadly “dancing plague” of 1518

Is math real?

Intelligent people take longer to solve hard problems: study

Military “whistleblowers” have been making UFO claims for 70 years

A 19th century family portrait of comets

Eastern philosophy says there is no “self” – science agrees

Carrington event of 1859 disrupted telegraph lines. Miyake event would be worse

Americans don’t walk. Is it laziness – or too dangerous to walk?