Kirk Sorensen on Thorium as an energy source

Below is a great talk from an ex NASA innovator on why Thorium is the energy source we need to survive on the moon. He poses the question: what's stopping us from using in on Earth?

The Thorium cycle reactor has reduced environmnental footprint and related byproducts.

Growing batteries

Using a Paua shell as an introduction Angela Belcher leaps into a world of possibility where viruses are coaxed to help create nanoscale structures as a foundation for batteries. This fantastic talk discussed how to literally grow a battery or solar cell.

Dielectric Elastomer Generator

Bioengineers at the University of Auckland have come up with a light, cheap rubber power generator that can produce up to a Watt of power when embedded in your shoes.

"The researchers built on ‘dielectric elastomer generator’ technology that used the movements of a flexible, non-conductive material to build up charge in attached electrodes."

These Artifical Muscles  are electroactive structures consisting of two layers of conducting carbon grease separated by an extremely stretchy insulating polymer film.

"When a voltage is applied, the configuration behaves like a capacitor, with positive and negative charges accumulating on either side of the insulator. As the opposite charges attract one another the insulator is squashed between them and flattens and stretches. Turn the voltage off and it contracts again to its original size." says New Scientist

The first artifical leaf

This says it all.. "Scientists today claimed one of the milestones in the drive for sustainable energy - development of the first practical artificial leaf."

"The key to this breakthrough is Nocera’s recent discovery of several powerful new, inexpensive catalysts, made of nickel and cobalt, that are capable of efficiently splitting water into its two components, hydrogen and oxygen, under simple conditions. Right now, Nocera’s leaf is about 10 times more efficient at carrying out photosynthesis than a natural leaf."

The 'leaf' is a silcon wafer around the size of a playing card, and floats in a pool of water. A catalyst is placed on either side, and as the silicon absorbs sunlight the energy is transferred to the catalysts which split the water into separate molecules of hydrogen and oxygen. The hydrogen can then be used as a fuel cell to create electricity. This breakthrough allows for a source of cheap clean energy. 

Travelling Wave Reactor

While the Thorium Fuel Cycle is touted as a potential safe fission energy source, Freakonomics are examining the development of a new class of nuclear reactor. This is one of the projects Bill Gates has been working on since leaving Microsoft.

"TerraPower’s traveling wave reactor (TWR) will offer a path to zero-emission, proliferation-resistant energy that produces significantly smaller amounts of nuclear waste than conventional nuclear reactors"

Thorium as a potential nuclear reactor

Thorium, a pure white silvery metal is being developed in China as a safe nuclear reactor. The Thorium fuel cycle has a perfect overheating safety feature; “If it begins to overheat, a little plug melts and the salts drain into a pan. There is no need for computers, or the sort of electrical pumps that were crippled by the tsunami. The reactor saves itself,” says ex Nasa scientist Kirk Sorensen from Teledyne Brown.

Where do good idea's come from?

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Brilliant short animation showing how ideas are formed, watch to see where technology innovation comes from. "Chance favours the connected mind."