Health

Pot use-low IQ link challenged in study

(HealthDay)—A new analysis challenges previous research that suggested teens put their long-term brainpower in danger when they smoke marijuana heavily.

Psychology & Psychiatry

Like Lance Armstrong, we are all liars, experts say

Although we profess to hate it, lying is common, useful and pretty much universal. It is one of the most durable threads in our social fabric and an important bulwark of our self-esteem. We start lying by the age of 4 and ...

Medical research

Bionic leg is controlled by brain power

The act of walking may not seem like a feat of agility, balance, strength and brainpower. But lose a leg, as Zac Vawter did after a motorcycle accident in 2009, and you will appreciate the myriad calculations that go into ...