Mitral regurgitation is the most common form of valvular heart disease and affects around 10% of Americans over 75. It occurs when the mitral ...

The Houston Open has battled rain over the first few days, but the weekend should be a little drier. Darkness disallowed the completion of the second round, which will pick back up at 8:30 a.m ...

Tennis world No. 2 Iga Swiatek received increased security after she was targeted by a man who was “aggressive and taunting” her Saturday during a practice session at the Miami Open ...

Emma Raducanu cruised into the Miami Open quarter-finals after brushing aside American 17th seed Amanda Anisimova in straight sets. Raducanu’s first last-eight appearance at a WTA 1000 ...

Here's the latest on video game development company Valve Corporation. Also known as Valve Software, Valve was founded in 1996 and its headquarters are located in Bellevue, Washington. The company ...