● NATURE
Sharks are older than trees
Sharks show up in the fossil record around 450 million years ago. The first trees appeared roughly 385 million years ago.
Coming soon to iPhone and Android
Curio is a vertical feed of short, surprising, true facts about history, science, space, nature and the human body. Every card is checked by a person and links to its source. And every session ends.
● SPACE
A day on Venus is longer than its year
Venus takes 243 Earth days to spin once, but only 225 to orbit the Sun.
Go deeper · 1 minWhy Curio exists
We love the swipe. We don't love how most feeds leave you feeling. Curio keeps the format and changes what's in it, so when you put your phone down you can say what you learned.
About 14 cards, then "You're caught up." No infinite scroll, no autoplay rabbit hole. Want more? Start a fresh set on purpose.
Every card links to where it came from, and a person reviews it before it reaches you. No rumors, no rage-bait, no made-up "facts."
Quick checks pop up a few cards after a fact, and your recap lists what you took away today. Remembering beats skimming.
How it works
1
One surprising fact per screen, with a short hook and art that sets the scene.
2
Tap for the one-minute story behind the fact, a line to remember, and the source.
3
A one-tap question about something you just saw. Recalling it is what makes it stick.
4
When the set ends, review today's takeaways and your score. Save the ones you love.
Three real cards from Curio.
● NATURE
Sharks show up in the fossil record around 450 million years ago. The first trees appeared roughly 385 million years ago.
● HISTORY
About 2,500 years separate the Great Pyramid and Cleopatra. Only about 2,000 separate her from Apollo 11.
● BODY
Even while you rest, your brain burns roughly a fifth of your body's energy.
Topics
Space
Planets, stars and the cosmos
History
Empires, wars and surprising timelines
Science
Physics, chemistry and how things work
Nature
Animals, plants and deep time
Body
The machine you live in
Sources
Curio draws from open collections at Wikipedia, NASA, The Metropolitan Museum of Art and the Smithsonian. Each card is written from its source and reviewed by a person before it's published, and every card links back so you can read more.
Curio is coming to iPhone and Android. Leave your email and we'll tell you the day it launches. Nothing else.
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