The Republican Party has not prioritized climate change solutions as much as Democrats, but lawmakers still have plans for promoting clean energy.

Russia's Rosatom is developing a plasma electric rocket engine that could drastically reduce travel time to Mars, potentially making the journey in 30 to 60 days.

Here's why a former U.S. energy secretary says "You don't have to be a physicist to understand that we have a problem," and ...

"Most advanced of its kind in the world." Scientists make progress on ultra-futuristic device that could generate virtually ...

Chinese researchers unveil how helium can improve solid-fuel rocket motors and enhance propulsion efficiency and stealth.