sagan debunks

Photo credit: via Physics and Philosophy/YouTube – Carl Sagan on astrology.

Planet, Popular, Science

45 years ago, Carl Sagan debunked astrology in 2 minutes using twins and a newspaper

Tod Perry

6/19/2025
An Operation Smile volunteer reverses an oxygen mask so a child with a cleft condition can blow a bubble for the first time in Guadalajara, Mexico. (Operation Smile Photos)

In Partnership With Operation Smile →

Family, Science

How Bubbles Help Kids with Cleft Conditions

Sarah Watts

5/11/2026