Why Are So Few People Left-Handed?

Today marks the 22nd annual International Left-Handers Day. To celebrate, let's look at why only around one in ten people is left-handed. Why, pray tell, are lefties are so rare – or, said another way, why are most of us righties? It seems like a simple question, but it's actually one of the biggest mysteries in all… » 8/13/14 12:20pm 8/13/14 12:20pm

Ambidextrous people are easier to manipulate than right-handed people

About 90% of people use their right hand for almost all activities, while the remaining 10% is split between the left-handed and the ambidextrous, people who use either hand with equal comfort. But these "inconsistent-handers" pay a price for their ability to use either hand - a truly bizarre study has discovered that… » 2/21/11 1:30pm 2/21/11 1:30pm

Parrots hold the evolutionary secret of why we're left-handed or…

Almost everybody has a dominant hand that they use, but it's actually a mystery why that is. After all, we can see both of our hands just as well, and there's no built-in reason why one should work better than the other. But some grabby parrots might hold the deep evolutionary reason behind handedness. » 2/01/11 5:34pm 2/01/11 5:34pm