One of the original motivations for taking a long bike trip was to travel far without the emissions, with a focus on climate-changing carbon emissions. However, while it stands as a superb technology with the distinction as the most energy-efficient form of transportation known to man, the bicycle does not solve our energy challenges. And while there may not be a silver bullet to solving the energy-economy-climate challenge, some emerging technologies have the potential to address the core of the challenge: to create a base-load energy supply that is cheaper than fossil fuels and carbon-free. In this post, I will highlight two of those technologies: TerraPower and Enhanced Geothermal Systems.
TerraPower is a next-generation nuclear technology that overcomes many of the limitations of existing nuclear technology. Bill Gates, who is a major financial and intellectual supporter of this project, introduces this technology in a recent TED talk, Innovating to Zero, which does a superb job of clearly and concisely defining our challenge and this potential solution. It takes a waste product, depleted uranium, and turns it into the fuel source. From TerraPower's website, "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. After an initial start-up with with a small amount of low-enriched material, this innovative reactor design can run for decades on depleted uranium – currently a waste byproduct of the enrichment process. An established fleet of TWRs could operate without enrichment or reprocessing for millennia. TerraPower has explored the advanced physics of this concept in detail with 21st-century computational tools and is moving forward with the overall plant design."

The other potential solution I will highlight, Enhanced Geothermal Systems, is promoted and financially supported by Google as part of its RE < C, or Renewable Energy Cheaper Than Coal project. This technology will use heat of the Earth's core to generate electricity not just in those locations of the Earth where the magma naturally comes close to the Earth's surface, but virtually anywhere by drilling deep enough to access it. If this technology can be made affordable and the process reliable, then it, too, could provide a base-load supply of electrical and thermal energy virtually anywhere in world. More on Google's Enhanced Geothermal Systems project here.
Both of these technologies are examples of the type of projects promoted by the think tank The Breakthrough Institute, which promotes significant and increased public-private investment in breakthrough energy technologies. They support an integrated, directed public-private program to speed the development of technologies such as these.