13:14:16 From Art Hunter to Everyone: Is there a proof-of-concept demonstration project underway to verify the commercial viability of this technology?  If yes, is there an Internet link with details? 13:17:01 From Jon Legg to Everyone: I have a question regarding scale, vis-à-vis two other considerations: Security and distance of power transmission. Providing security for a large nuclear station may be easier on a ratio of cost to power input basis. Is this true? Handling so-called wasted and depleted uranium has a number of advantages, but it also involves constant security issues. How does this balance work itself out? Large reactors involves transmitting ultra-high voltage electricity over long distances, which could be seen as more efficient, when compared to many more nodes of transmission over shorter distances. 13:44:39 From Barry Bruce to Everyone: This is great--how appropriate is it for the rest of the world? Also, just replacing fossils fuel probably isn’t enough to stem climate change--population growth and agriculture are hugely important in themselves. 14:14:00 From Bill Tyson to Everyone: What about thorium as a fuel? 14:20:55 From Ted Manning to Everyone: Is nuclear so politicized that rational assessment of choices is impossible? 14:21:08 From Bob Walker to Everyone: question/comment 14:21:58 From Jean Dougherty to Everyone: How advanced is the development and deployment of these reactors? 14:27:04 From John Meyer to Everyone: Question: How much heat does one of these reactors produce for every kW hour of electrical energy. Cost / kWh? 14:29:03 From Thorhaug Anitra to Everyone: Which nations have the resources to do this besides Russia, Canada, USA, and a few other nuclear rich nations. The question of using geo-thermal is not generally considered in national energy for many nations except for New Zealand and Iceland. Do you understand why? 14:40:58 From Barry Bruce to Everyone: Is this more “doable” than fusion technology? 15:00:04 From John Meyer to Everyone: It seems to me that very special conditions are required to produce electricity from geothermal. Iceland is sitting on a bubble of magma and they have to be very careful with how much heat they take out. I had a tour of the facility 30 km east of Reykjavik and most areas the heat gain is 1 degree for every 100 m of depth and you need 300 degrees C at least to turn a turbine.