TerraPower is investigating a class of nuclear fast reactors called the traveling wave reactor (TWR). One of TerraPower’s primary investors is Bill Gates. Gates’ investment is reportedly in the tens of millions of dollars. The major benefits of these reactors are that they can get high fuel utilization (enhancing sustainability) in a manner that does not require reprocessing and could eventually eliminate the need to enrich uranium. Continue reading for more cool facts that will really get you thinking.