carl sagan

Carl Sagan used a sliced apple to perfectly explain the fourth dimension. – Photo credit: via Carl Sagan Planetary Society/Wikimedia Commons and John Finkelstein/Pexels

Planet, Popular, Science

46 years ago, Carl Sagan beautifully explained the fourth dimension using a sliced apple

Tod Perry

2/9/2026
Youth-led party for community engagement, MEDEA, Tanzania Captured by James Roh for Pura

In Partnership With Pura →

Culture, Education, Empowered Women, Equality, Family, Identity, Modern Families

The next generation of female leaders has arrived. Here’s how they’re making sure they (and every girl) get a chance to learn.

Sarah Watts

3/8/2026
A photo of Lynn Margulis. – Photo credit: Facts That Will Blow Your Mind/Facebook

Nature, Popular, Science

Her groundbreaking theory on the origin of life was rejected 15 times. Then biology proved her right.

Heather Wake

2/1/2026
Carl Sagan tried to warn us that a 'charlatan' leader could easily take over the U.S. – Photo credit: strobe5000/YouTube

Popular, Science, Technology

29 years ago, Carl Sagan revealed exactly how a ‘charlatan’ leader could take over the U.S.

Tod Perry

12/17/2025
Carl Sagan used a sliced apple to perfectly explain the fourth dimension. – Photo credit: via Carl Sagan Planetary Society/Wikimedia Commons and John Finkelstein/Pexels

Culture, Planet, Pop Culture, Popular, Science

45 years ago, Carl Sagan beautifully explained the fourth dimension with just an apple

Tod Perry

9/5/2025
Education, Learning, Uncategorized

Carl Sagan’s 1988 astronomy course had nothing to do with stars. The final exam is still relevant.

Annie Reneau

9/4/2025
Science, Technology, Uncategorized

Carl Sagan tried to warn us that a ‘charlatan’ leader could easily take over the U.S.

Tod Perry

8/26/2025
Carl Sagan on astrology. – Photo credit: via Physics and Philosophy/YouTube

Planet, Popular, Science

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

Tod Perry

6/19/2025
Carl Sagan on 'Cosmos' – Photo credit: Image via YouTube

Planet, Science

Carl Sagan once easily debunked flat Earthers with just a piece of cardboard

Tod Perry

3/21/2025
The moon nearly had a man-made crater on it. – Photo credit: Canva

Education, History (Education)

The U.S. Air Force concocted a serious plan to nuke the moon in the 50s as a show of power

Annie Reneau

3/20/2025
Array – Photo credit: via PBS

Popular

In his last interview, Carl Sagan warned that America will be taken over by a ‘charlatan’ political leader

Tod Perry

3/1/2025
Carl Sagan and a sliced apple – Photo credit: via Carl Sagan Planetary Society/Wikimedia Commons and John Finkelstein/Pexels

Innovation, Popular, Science

Can’t comprehend the 4th dimension? Carl Sagan explains it with an apple in this classic clip.

Tod Perry

1/25/2025
Carl Sagan's keynote address at the 5th Emerging Issues Forum at NCSU. – Photo credit: via IslandPalm14/YouTube

Climate Change, Science

Carl Sagan’s irrefutable 1990 argument for using all U.S. resources to fight climate change

Tod Perry

11/20/2024
Array – Photo credit: via David Grinspoon / YouTube

Democracy, Politics, Popular

Carl Sagan’s answer when Ted Turner asked if he’s a socialist is a roadmap for rebuilding America

Tod Perry

10/26/2024
Array – Photo credit: via YouTube

Planet, Popular, Science

Remember when ‘Cosmos’ host Carl Sagan debunked flat Earthers with a piece of cardboard?

Tod Perry

10/10/2024
Carl Sagan published <a href="https://amzn.to/4aPYzLR">"The Demon-Haunted World: Science as a Candle in the Dark"</a> in 1995. – Photo credit: Images courtesy of NASA and Amazon

Internet, Pop Culture, Popular

Carl Sagan’s future ‘celebration of ignorance’ prediction from 1995 was spookily spot on

Annie Reneau

6/7/2024