How fast does a human need to go to run on water?

On Earth, the human's legs would have to press down against the water at more than 67 miles per hour which, the researchers explain, is 15 times the force our legs are capable of producing.

outsideonline.com - Could Humans Run On Water? - Outside Online

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Lucky for you, five researchers in Italy wondered the same thing. According to their 2012 study published in the scientific journal PLoS One, yes, humans can run on water—but only under specific conditions.

On Earth

The Basilisk lizard aka the Jesus Christ lizard is one of the only animals on Earth that run on water. These lizards slap their feet against the water hard enough to create a small air pocket that can keep them afloat for distance of about 15 feet. The Italian researchers figured out how a 5-foot-7, 145 pound human could run on water just like that lizard. On Earth, the human’s legs would have to press down against the water at more than 67 miles per hour which, the researchers explain, is 15 times the force our legs are capable of producing. But if gravity were reduced, and we had bigger feet, we could pull off the Jesus lizard run for seven to eight seconds. Twenty-two percent of the earth’s gravity is “the maximum gravity at which humans can run on water, when assisted by a small rigid fin,” the researchers wrote. To achieve the same foot-size to leg-length ratio as the Basilisk lizard’s, the fins would have to make a person’s feet about 18 inches long and 6.5 inches wide.

On the Moon

On the moon, where gravity is about 16 percent of the earth’s gravity, wrote the researchers, humans up to 160 pounds could run on water wearing fins.

In a Viral Video

So unless you hitch a ride to the moon, or build an exoskeleton that can whack the water at 67 miles per hour without ripping off your legs, your chances of mimicking the Jesus Christ lizard are small. But that didn’t stop these “Liquid Mountaineers” from trying: THE BOTTOM LINE: At 22 percent of the earth’s gravity, and on the moon (16 percent of the earth’s gravity), humans can run on water with the help of small fins.

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Which is king of sport?

Gridiron football Gridiron football is the king of sports – it's the biggest game in the strongest and richest country in the world.

us.macmillan.com - The King of Sports - Macmillan

Gridiron football is the king of sports – it's the biggest game in the strongest and richest country in the world. In The King of Sports, Easterbrook tells the full story of how football became so deeply ingrained in American culture. Both good and bad, he examines its impact on American society.

The King of Sports explores these and many other topics:

* The real harm done by concussions (it's not to NFL players).

* The real way in which college football players are exploited (it's not by not being paid). * The way football helps American colleges (it's not bowl revenue) and American cities (it's not Super Bowl wins). * What happens to players who are used up and thrown away (it's not pretty).

* The hidden scandal of the NFL (it's worse than you think).

Using his year-long exclusive insider access to the Virginia Tech football program, where Frank Beamer has compiled the most victories of any active NFL or major-college head coach while also graduating players, Easterbrook shows how one big university "does football right." Then he reports on what's wrong with football at the youth, high school, college and professional levels. Easterbrook holds up examples of coaches and programs who put the athletes first and still win; he presents solutions to these issues and many more, showing a clear path forward for the sport as a whole.

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