In addition to indicating a possible problem, smoke from the tailpipe means dirty emissions. Most states and some municipalities mandate periodic tailpipe-emissions testing. If your car is emitting ...

Two Russian spacewalkers floated outside the International Space Station Wednesday and isolated a leaking radiator as planned, apparently causing residual coolant still trapped inside to make its way ...

The "substantial" Soyuz coolant leak lasted more than 3 hours as Russian engineers investigate the problem. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...