Why We Faint (When Other Animals Don't)
Adults Animals
Health
Human
Humans are the only animals known to faint due to triggers like shock, fear, or pain; this is due to a combination of our massive brains and upright stance.
The Ultimate Guide to Black Holes
Adults Education
Science
Space
If you want to continue thinking about black holes a tad more, you can do so by getting one of the many black hole related things the Kurzgesagt team made with love:
bit.ly/3dRJj71
This Unstoppable Robot Could Save Your Life
Adults Construction
Creativity
Science
This robot has applications to archaeology, space exploration, and search and rescue — with a simple elegant design inspired by a plant.
How do wind turbines work?
Adults Nature
Science
Technology
Explore how wind turbines convert wind into electricity, and the challenges of powering the world entirely with wind energy.
Proteins: Explained
Adults Education
Food
Science
You might already know that proteins are a fundamental part of your diet, but they're much more than that.
Whatever happened to acid rain? - Joseph Goffman
Adults History
Life
Nature
Discover what causes acid rain, and how scientists were able to largely eliminate this major environmental threat.
The surprising secrets of hummingbird flight
Adults Animals
Life
Nature
Dig into the incredible fighting, feeding, and flying capabilities of hummingbirds.
Which Will Kill You First?
Adults Biology
Health
Human
The body can get a whole lot colder - but not a whole lot hotter - before we die. Why is that?
Brad Makes Fermented Pasta Sauce | It's Alive | Bon Appétit
Adults Film
Food
Human
It's Alive with Brad Leone is back for episode 80 and this time Brad is making fermented pasta sauce.
New Feature - Release Exercise Answers
Teachers Teacher Cafe
Exercise answers are now hidden from the students by default. You can release the answers at any time by clicking on this icon.
New Feature - Share Exercises with Multiple Classes
Teachers Teacher Cafe
Teachers can now share an exercise with multiple classes at once.
Why every world map is wrong - Kayla Wolf
Adults History
Human
World
Dig into the inaccuracies of flat maps and how different map designs can shift our point of view.
World’s Most Expensive Mango
Adults Food
Human
Industry
A friend from out of town gifts you with a delicious-looking mango. An odd gift but who can deny a bite of the juicy fruit! You cut into only to find out that this mango cost $3,600!
Can you solve the fantasy election riddle? - Dennis E. Shasha
Adults Education
Human
Math
After much debate, the realm has decided dragon jousting may not be the best way to choose its leaders, and has begun transitioning to democracy.
What’s the best fuel for your car?
Adults Automotive
Nature
Science
Dig into which fuel— gasoline, electric, biofuels, or electrofuels— is both affordable for consumers and sustainable for the planet.
Why "Nothing" Matters in Science
Adults Data Science
Math
Science
Null results often get a bad rap, sometimes characterized as a study "finding nothing," but there's a lot we can learn from studies whose results fail to support their hypotheses.