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The title of this video is changing every 10 seconds to reflect an estimate of the actual energy used just by people (like you!) watching it. Thanks to Jasper Palfree for doing the computer magic that makes that possible!

Elon Musk shows off Tesla's $35,000 sedan for the masses.

True innovation means considering what happens to a product at every stage of its life cycle. Liam disassembles your iPhone when it's no longer functioning, so the materials inside can live on.

India is one of the world's largest consumers of disposable plastic cutlery, which has the makings of a huge health and environmental crisis written all over it.

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.

Climate Change: The View From MinuteEarth

Charger prototype finding its way to Model S

"Desertification is a fancy word for land that is turning to desert," begins Allan Savory in this quietly powerful talk. And terrifyingly, it's happening to about two-thirds of the world's grasslands, accelerating climate change and causing traditional grazing societies to descend into social chaos. Savory has devoted his life to stopping it.

The Salton Sea is the largest body of water in California, home to the second most diverse group of birds in America and it exists by accident.

This is what a nuclear disaster area looks like.

We use a LOT of energy, but we waste a lot too. Where that waste happens might surprise, you though. We don't just waste energy when we leave the lights on or the thermostat cranked down too low. It happens at the dinner table and the water faucet as too!

Professor Richard Muller, of Berkeley Earth Foundation, discusses his views on climate change and how he hopes we can leave a better planet for our children.

Speed to Reach a Bluer Sky with energy efficiency, material economy, cohesive community. Broad Sustainable Building is a Modular Factory Built Product.

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.

Learn the basic science of climate change in 24 easy steps.

Chernobyl is one of the most interesting and dangerous places I've been. The nuclear disaster, which happened in 1986; the year after I was born, had an effect on so many people, including my family when we lived in Italy. The nuclear dust clouds swept westward towards us. The Italian police went round and threw away all the local produce and my mother rushed out to purchase as much tinned milk as possible to feed me, her infant son.

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.

Save the Arctic - Watch and share.

Watch this if you're willing to accept some shocking facts about climate change.

To showcase its abilities, Smart Fortwo drive shows you how it can beat top racing cars, given the race is only 5-metres long.