Sewer backflow preventers are an essential part of your home's plumbing. Here's why you need one and how to test if yours is ...

Valve has shared some Half-Life 2: Episode 3 footage for the first time ever. The company did so as part of a new documentary ...

“Newell sees Half-Life 2 as an engine, a platform, or at best a whole industry unto itself,” gaming journalist Geoff Keighley ...