In this video, I’ll show you how to make your own smoke test machine to quickly and easily detect leaks. A smoke machine makes diagnosing vacuum leaks fast and hassle-free—watch now to see how ...

This DIY Air Purifier Can Actually Help When Wildfire Smoke Spreads We tested this popular social-media hack in the lab. Here's what you need to know before trying it at home.

A 10-year-old girl who built a low-tech, DIY air purifier met with researchers from the University of Connecticut for advanced biochamber testing at the Environmental Protection Agency's lab in RTP.

Tips to help you prepare for — and pass — your next emissions test.