A 2005 report by the International Atomic Energy Agency discusses potential benefits along with the challenges of thorium reactors.
In addition, thorium reactors only operate as long as there is a source of neutrons being beamed in to split atoms.
Those favouring thorium nuclear reactors might wish to consider that they produce uranium 233 which can be used to make bombs.
Note that it is entirely possible to make uranium bombs with the products of a thorium reactor.
That said, we should switch to thorium reactors.
A small thorium reactor heats and powers the place.
Nowadays, it is mostly produced as an intermediate product of nuclear fission in thorium high-temperature reactors:
Science writer Richard Martin notes that Weinberg lost his job as director because he championed the safer thorium reactors.
India's government is developing up to 62, mostly thorium reactors, which it expects to be operational by 2025.
In addition, thorium reactors could theoretically be used to burn up the dangerous plutonium stored in existing nuclear waste stockpiles.