Science and The Death Penalty in the United States

Since capital punishment was reinstated by the US Supreme Court in 1976, 932 people have been put to death via lethal injection, 154 by electrocution, 11 by means of the gas chamber, 3 have been hung and 2 have been killed by firing squad. These 5 methods of execution are the most commonly used in the US today; what I want to do in this podcast is to better understand the methods used, the science behind them - especially given that a 2020 survey revealed that only 36% of citizens supported the death penalty.