Over time and miles, your car might start to slow down. It might not accelerate as quickly as it once did; the engine may not run as smoothly as you remember, or the fuel economy may dip—but ...

Carbon deposits are a normal occurrence in an engine, but can build up over time, causing problems. Essentially, heat, pressure, and oxidation can transform unburned fuel into a black soot-like ...

Worland is a senior correspondent at TIME, based in the Washington, D.C., bureau. He received Covering Climate Now’s inaugural Climate Journalist of the Year award in 2022, among other awards. He is ...

Hydrogen is a clean energy source with only water vapor as waste, potentially replacing fossil fuels. Investing in hydrogen stocks requires understanding the risks and market volatility in this ...