Brain imaging showed that nearly eleven percent of them had suffered what is known as a silent stroke.

VOA: special.2009.08.12

The biathlon is another Olympic sport that is not as well known.

VOA: special.2010.02.10

That theory is known as evolution through natural selection.

VOA: special.2009.02.25

A less invasive procedure known as a virtual colonscopy is done with a CT scan that passes x-rays through a patient's abdomen.

VOA: standard.2010.04.07

The Secretary General of the Association of Southeast Asian Nations, Surin Pitsuwan, recently told VOA that Washington's willingness to talk with Burma, also known as Myanmar, is opening a "new ballgame" for the region.

VOA: standard.2009.11.02

"When our government has information on a known extremist and that information is not shared and acted upon as it should have been and this extremist boards a plane with dangerous explosives that could cost nearly 300 lives, a systemic failure has occurred.

VOA: standard.2009.12.29