World’s Strangest

Your source for the strangest things around!

The Number of the Day: 30

Of the world’s 40,000 spider species, only about 30 have venom that causes illness in humans. Related Link: For the next couple weeks, we’ll be pulling Numbers of the Day from the beautiful and fascinating National Geographic Answer Book, which hit stores yesterday. You can order your copy from the National Geographic Store. [See previous Numbers of [...]

Got an idea for a mental_floss t-shirt?

If you’ve been sitting on a great t-shirt slogan, now’s your chance to turn it into cash. We’ve re-opened the mental_floss t-shirt submission mailbox, so you can send your best ideas to To see the kind of thing we go for, check out the t-shirt section of our store. We’ll be checking that account [...]