After two years, the border between Canada and the U.S. has been opened to cattle trade.

Concerns over mad cow disease caused the border to be closed until Canada's agriculture minister announced a truck carrying cattle was transported to the U.S

After two years, the border between Canada and the U.S. has been opened to cattle trade.

Concerns over mad cow disease caused the border to be closed until Canada's agriculture minister announced a truck carrying cattle was transported to the U.S

The H5N1 strain of the avian flu has killed more than 50 people in Asia, since 2003.

More than 140 million chickens have been slaughtered in the region in a bid to halt the disease

Researchers report that dark chocolate may help lower blood pressure.

The study shows compounds found in chocolate, called flavonoids, can help blood vessels work more smoothly, with the possibility of reducing heart disease

New research reveals memory can be recovered in the early stage of Alzheimer's disease. The findings have been published in the journal "Science".

Lead researcher Karen Ashe, a University of Minnesota neurologist says, "There basically are two prongs and we need to deal with both. What we're showing is that there are neurons which are affected by Alzheimer's but not dead