A pilot who made an emergency landing last month on Interstate 805 says the small plane’s engine began to sputter after he switched fuel tanks early in the flight, according to a preliminary ...

The emissions system of your car does a lot to help make its exhaust more bearable to deal with. But it wouldn't be nearly as ...

Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...