Combustion engines, the engines in gas-powered cars, only use a quarter of the fuel's potential energy while the rest is lost as heat through exhaust. Now, a study demonstrates how to convert exhaust ...

A compact thermoelectric generator built by researchers at Pennsylvania State University can convert exhaust heat from cars, helicopters, and unmanned aerial vehicles (UAVs) into usable electric ...

That can be rotted away or torn, allowing water to work its way into the house along the pipe. With any of these problems, ...

The Environmental Protection Agency and California Air Resources Board have established that NOx and particulate emissions ...