During the summer, the most dangerous period for U-V rays in the United States mainland is between the hours of ten in the morning and four in the afternoon.

VOA: special.2010.07.06

Ultraviolet,also called U-V,rays cause the skin to burn.

VOA: special.2010.07.06

The golden sun's rays hit the green forest.

VOA: special.2010.04.03

X-rays are taken to see the break.

VOA: special.2009.02.04

So we are looking at bio-markers, we're doing sophisticated X-rays, like functional MRI and spec-scanning to understand what happens in the brains of patients with fibromyalgia when they have pain, what happens to their brains when we treat that pain."

VOA: special.2011.08.02

Elsewhere in the Major Leagues, Chicago White Sox left-handed pitcher Mark Buehrle threw the 18th perfect game in Major League history against the Tampa Bay Rays on July 23.

VOA: standard.2009.12.24

In the end, the White Sox defeated the Devil Rays 5-0.

VOA: standard.2009.07.24

But there are rays of hope, and thanks to the introduction of rapid diagnostic tests and combination treatments, Senegal has seen large drops in both reported cases and mortality rates.

VOA: standard.2009.04.25

At the Chicago White Sox U.S.Cellular Field on Chicago's South Side, the 30-year-old pitcher retired all 27 batters from the Tampa Bay Devil Rays without allowing anyone to reach first base, pitching a perfect game and putting his name in a record book occupied by only 17 others in Major League history.

VOA: standard.2009.07.24