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"Donald Sadoway: The missing link to renewable energy Tweet this talk! (we'll add the headline and the URL) Post to: Share on Twitter Email This Favorite Download inShare Share on StumbleUpon Share on Reddit Share on Facebook TED Conversations Got an idea, question, or debate inspired by this talk? Start a TED Conversation, or join one of these: Green Home Energy=Hydrogen Generators-alternative sources Started by Kathleen Gilligan-Smith 1 Comment What is the real missing link in renewable energy? Started by Enrico Petrucco 8 Comments Comment on this Talk 60 total comments Sign in to add comments or Join (It's free and fast!) Sort By: smily raichel 0 Reply Less than 5 minutes ago: Nice smily raichel 0 Reply Less than 5 minutes ago: Good David Mackey 0 Reply 3 hours ago: Superb invention, but I would suggest one more standard mantra that they should move on from and that is the idea of power being supplied by a centralised grid. This technology seems to me to be much more beneficial on a local scale, what if every home had its own battery, then home power generation becomes economically more viable for everyone. If you could show that a system like this could pay for itself in say 5 years then every home would want one. Plus for this to be implemented on a large scale requires massive investment that could be decades away. Share the technology and lets get it in homes by next year. Great ted talk. Jon Senior 0 Reply 1 hour ago: I agree 100%. Localised energy production would also make energy consumers more conscious of their consumption and encourage efforts to reduce it. We can invent and invent all we want, but the fast solution to allowing renewable energies to take centre stage is to reduce the base energy draw. With lower baseline consumption, smaller "always on" generators are required to keep the grid operational. Town and house-l

Thermoelectric bracelet that helps people maintain a comfortable body temperature takes home $10,000 from MIT's annual materials-science design competition. The "watch" part of the prototype actually consists of the team's custom copper-alloy-based heat sink (a component that lowers a device's temperature by dissipating heat). Attached is an automated control system that manages the intensity and duration of the thermal pulses delivered to the heat sink. Integrated thermometers also measure external and body temperature to adjust accordingly.

"We showed that copper ions diffuse out from a brass plate into a fish tank filled with seawater, and within 40 hours the copper killed 99.99% of the Vibrio food poisoning bacteria contaminating the living fish and shellfish," says Dr Jeong-Weon Huh from the Department of Health Research, at Gyeonggi-do Institute of Health and Environment, Republic of Korea. The copper is absorbed by the bacteria, causing them to die and fall off the gills and skin of the fish. Vibrio are even flushed from the internal organs of the fresh fish, sinking to the bottom of the tank. The remaining copper ions are absorbed from the seawater in the tank by sand and polyester filters, leaving safe, clean fish ready to be eaten by restaurant diners. "By being able to remove the copper ions, we can prevent people from consuming excess copper themselves, but let them safely enjoy any kind of fish, either raw or cooked," says Dr Jeong-Weon Huh.

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BERLIN (Reuters) - Germany's ruling parties have reached a deal on reduced support for the solar energy sector which involves cuts of 8 percent in 2009 and 2010, and 9 percent in 2011, Social Democrat politician Hermann Scheer told Reuters.

Another challenge for nuclear fusion. Better design the copper heat sink to be replaceable.