When dragonflies mate, their tails form a heart.
If you haven't seen this awesomely droll series of short animations, now's your chance.
Top Secret America. Homeland security, counterterrorism, and spying have grown so much in the past nine years that the result "amounts to an alternative geography of the United States".
Nothing like a thick, flavorful steak, especially when it's a vegan-friendly dessert. Wondering how that happens?
I don't meet many people who are passionate about the blues.
In this TED Talk, William Li talks about how blood vessels grow -- and how eating different foods affects cancer growth.
During the Industrial Revolution, as more children started growing up in cities, physicians noticed a new disease, which weakened children's bones so they were no stronger than cartilage.
A lot of people assume that it's just the way that coins smell, and the odor is rubbing off on their hands, but you're not smelling the metal so much as you're smelling yourself.
During the most recent television season, Judge Judy averaged 6.6 million viewers per day, making her the top rated daytime show on television.
Ever wonder what a cartoon version of yourself would look like decked out in 60's garb a la Mad Men?
Even in 2010, the idea of a fully-functional underwater community seems like a super futuristic and ridiculously impossible sci-fi dream.
We all dream of having some superpower to help navigate life. For instance, I've always wanted to be able to read peoples' minds.
The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid. One of these numbers is already provided for you.
Sperm is so useful that the gene responsible for it hasn't changed in 600 million years.
I wish I could remember these amazing uses for ordinary household items before I chuck out some of them out!
In case you weren't obsessively refreshing mentalfloss.com all week, here's what you