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The Earth intercepts a lot of solar power: 173,000 terawatts. That's 10,000 times more power than the planet's population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy.

The Wendelstein 7-X was a nightmare to build, but if it works it may light a new path to fusion energy.

The technology for vehicles powered by fuel cells is established, and is set for market. However, the biggest challenge will be to make sure the fuel is available when the cars are available.

Off-grid solar panels are bringing electricity to Andean villages as part of a 15-year plan to provide Peru's vast countryside with electricity.

I'm filming a documentary for TV about how Uranium and radioactivity have shaped the modern world. It will be broadcast in mid-2015, details to come. The filming took me to the most radioactive places on Earth (and some places, which surprisingly aren't as radioactive as you'd think). Chernobyl and Fukushima were incredible to see as they present post-apocalyptic landscapes. I also visited nuclear power plants, research reactors, Marie Curie's institute, Einstein's apartment, nuclear medicine areas of hospitals, uranium mines, nuclear bomb sites, and interviewed numerous experts.

When complete, the 550-megawatt Topaz Solar Farms will have more than 8 million modules installed. The project will cover 4,700 acres in San Luis Obispo County and will provide enough electricity equivalent to powering more than 180,000 average California households.

1 calorie = 4.2 joules, wait what?!

Fossil fuels have powered human growth and ingenuity for centuries. Now that we're reaching the end of cheap and abundant oil and coal supplies, we're in for an exciting ride. While there's a real risk that we'll fall off a cliff, there's still time to control our transition to a post-carbon future.