That's a little bit off from a trillion dollars,” Sen. Jack Reed said. The difference between $1 trillion and $15 billion is $985 billion.

They found that declarative memory is correlated with math skills in second through fourth grade and is also predictive of ...

Meet Britain's 'smartest' siblings - who have a combined IQ of 314 and were accepted into Mensa at the age of 10 and 11.