The Alvin Weinberg Foundation
The Alvin Weinberg Foundation was a registered UK charity, operating under the name Weinberg Next Nuclear, that campaigned for research and development into next-generation nuclear energy. In particular, it advocated advancement of liquid fluoride thorium reactor (LFTR) and other molten salt reactor (MSR) technologies.
Source: Wikipedia — The Alvin Weinberg Foundation (CC BY-SA 4.0)