It seems like a logical answer to the climate crisis: capture the carbon dioxide that our cars emit. Is it that simple? And what do sand and silica have to do with it? See more »

Catalytic converters are amazingly simple devices that have proven to be highly effective at reducing harmful emissions produced by car engines. How much do you know about catalytic converters? See more »

A catalytic converter is one of the most important parts of a car's emissions control system. It treats the exhaust before it leaves the car and removes a lot of the pollution. Learn how they work. See more »

Exhaust emissions test check for the absence of a catalytic converter or a malfunctioning one during an emissions inspection. Read on to learn how you can find out if your catalytic converter has failed. See more »

You see it every time that smoke billows from your car's exhaust pipe, so there's no denying that vehicles are major contributors to air pollution. See more »

Every car out there has a muffler -- it performs the crucial job of turning thousands of explosions per minute into a quiet purr. Mufflers use some cool technology to dim the roar of an engine. Learn the principles that make it work. See more »

An oxygen sensor in a car is a very important part of making your engine run smoothly. Learn what it does and what can happen if your oxygen sensor fails. See more »

To reduce your cars emissions, you can help its catalytic converter work more efficiently by preheating it, or you can inject a urea solution into your exhaust pipe. Learn what you can do to reduce your car's emissions in this article. See more »

If you have a vehicle that needs to be tested for emissions, you might want to check on the condition of your catalytic converter. So what is it and what does it do? See more »

I have a dirt bike and the exhaust pipe has this big bulge in it near the engine. What is the bulge for? See more »