As children learn basic arithmetic, they gradually switch from solving problems by counting on their fingers to pulling facts from memory. The shift comes more easily for some kids than for others, but no one knows why.
Aug 17, 2014
Kenya has become the latest country to ban travellers from parts of Ebola-hit west Africa as Nigeria scrambled to stop the deadly disease spreading through the continent's most populous nation.
Aug 17, 2014
A federal law enacted to combat the use of "club drugs" such as Ecstasy—and today's variation known as Molly—has failed to reduce the drugs' popularity and, instead, has further endangered users by hampering the use of ...
Aug 17, 2014
