Hi, everybody. It's now been four years since a crisis that began on Wall Street spread to Main Street, hammering（锤击， 敲打） middle-class families and ultimately costing our economy 9 million jobs. Since
And there's been a bunch of interesting studies recently that have shown this playing around is really a kind of experimental research program. 最近有很多有意思的研究显示了孩子的随意尝试，的确可以作为一个研究项目。 Here's one from Cris
It's the part of mathematics that even mathematicians don't particularly like, 统计是数学的一部分，但是它是连数学家都不怎么喜欢的那一部分， because whereas the rest of maths is all about precision and certainty, statistics is almo
Hello, everyone! This weekend, millions of Canadians and billions of people around the world will gather with friends and family to celebrate Easter, or Pascha, as it's called in the Orthodox Church.
