Most clinicians still underestimate the degree to which genetic factors shape personality traits and personality development. This is not controversial within behavioral genetics, but it remains surprisingly controversial in everyday clinical thinking. Twin and adoption studies converge on a striking conclusion. Roughly half or more of the variance in most personality traits is attributable to...

Many Canadians woke up to weather advisories Sunday morning, with warnings in place in most provinces and two territories. 

These industry leaders each have a mathematically clear path to join the exclusive $3 trillion club. Much of what drives the U.S. economy has changed over the past couple of decades. For example, energy stalwart ExxonMobil and industrial bellwether General Electric were the two largest publicly traded companies by market cap in 2005, valued at...