"What the #*%^?" is a common question heard every year from hundreds of bobbing heads attempting the famous Alcatraz swim across San Francisco Bay; arms and legs flail furiously, but it seems they're no closer to the beach.
The government has an explanation for this swimming phenomenon: You suck!
It's spelled out in this month's Popular Mechanics. "Humans are terrible swimmers, converting roughly 3 percent of their kicks, strokes and general underwater exertions into forward motion. We can boost our efficiency to 10 percent by adding fins, but dolphins, by comparison, can turn 80 percent … Read more