That's awesome. I didn't read the Swedish article.
Here's a link to the OSU study that shows a higher average IQ for blonde men and women than other hair colors, although brown hair men had a higher IQ than blonde haired men.
Oh what racist research!
Don't worry, science isn't racist. It's just biology. IQ isn't even only a product of race; a guy by the name of Flynn has done some compelling research demonstrating the environmental factors of IQ.
What might really surprise you is if you look at the average IQ of Taiwan versus, say, America, or Sweden. I'll just say the number is significantly higher in general in East Asia.
It is a very popular idiom in Chinese:
Basically, it means a very hurried tour.
Nice, I thought I may have been a chengyu. Good to know the meaning now!