Mental Floss

BIG QUESTIONS



Photo by ?? Janko Ferlič on Unsplash

Just like how an older sibling might act out when a new baby joins the family, a study from PLOS ONE suggests dogs get jealous when they perceive there is a rival for their owners' attention.

Hannah Keyser






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One thing is for sure: It’s not because we find it funny. In fact, many people find tickling very unpleasant. So why does it make us laugh?

Erin McCarthy


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All-Stars on contending teams may have cause to try their hardest once they get to the Midsummer Classic, but what motivates them to get there? And I mean that in the most cynical sense.

Hannah Keyser






istock

Just as we humans cling to our air conditioners and plunge our heads into the freezer in the summer months, koalas have found a source of relief from stifling temperatures.

Jessica Hullinger


Hannah Keyser

Not recently, of course. But what about their ancestors? The question is: Did the flightless birds of today, a family known as Ratites, evolve from flightless birds of yore or did their airborne ancestors lose the ability to fly over the millennia?

Hannah Keyser




YouTube

Mike Judge was asked this at a 10th Anniversary screening of Office Space.

Nick Greene


Thinkstock

These days, pants are our garment of choice. But for years, our ancestors draped themselves in tunics, robes, and gowns, until someone decided they were tired of having the wind up their skirt. So, what prompted the change? When, exactly, did two-legged t

Jessica Hullinger
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The "anti-gravity treadmill" was originally invented by Robert Whalen, a biomechanics researcher at NASA Ames Research Center, in the 1990s. Hint: It *doesn't* defy the laws of physics.

Sarah Fecht