Figuring out the age of a blinking speck in the sky is a difficult feat, especially if considering how many types of stars there are. This is where a Hertzsprung-Russell meets a gyrochronologist.

Hank remembers Back to the Future and tells us about his favorite word combination--lasers and fusion.

The Sun is getting brighter and the planets in our solar system that are habitable are changing.

This week we are exploring alternative energy sources. We'll look at how biomass can be burned as a fuel source, how hydrogen can be used in a fuel cell to generate electrical power, and how nuclear fission provides power to the grid....

Huge container ships relying on fossil fuels transport all kinds of goods across the ocean, creating a huge climate change impact. But there's a better way to power this transport using, of all things, water.

The new idea is to place fully independent hydrogen propulsion systems in pods that can easily be clicked on and off.<br/>

Hydrogen-powered cars are already available for sale in Japan. But there are only 120 hydrogen fueling stations in the country at the moment and the cars are very expensive. In this video, find out if there other green...

Charging electric vehicles takes a lot longer than filling a gas tank right now. In this video, learn how powering vehicles with green-generated hydrogen fuel could improve this process.<br/>
Green Cars part 3/5

In this video, Singapore's Transport Minister discusses the country's goal of achieving carbon neutral transportation by 2040. He explores the challenges of transitioning to cleaner energy sources, as well as the need for a reliable...