The idea that some groups of people may be more intelligent than others is one o

Unless we spend money to spot and prevent asteroids (小行星)now, one might crash in

Ancient Greek philosopher Aristotle viewed laughter as “a bodily exercise precio

By 1830 the former Spanish and Portuguese colonies had become independent nation

Research on animal intelligence always makes me wonder just how smart humans are

The biggest safety threat facing airlines today may not be a terrorist with a gu

[单选题,1.3分] Fred is second to none in maths in our class, but believe it or not,

Brazil has become one of the developing world‘s great successes at reducing popu

While still in its early stages, welfare reform has already been judged a great

Believe it or not, optical illusion (错觉)can cut highway crashes.     Japan is a

The rise of multinational corporations (跨国公司), global marketing, new communicati

Long after the 1998 World Cup was won, disappointed fans were still cursing th