A concept referred to as "degrowth communism" is being discussed in relation to sustainability and the climate crisis. The idea appears to be linked to the work of Kohei Saito, who has written about connecting communism with environmental issues, and may also be tied to the thoughts of Karl Marx. It is unclear whether Marx himself advocated for degrowth communism, but Saito's work is exploring the potential for a communist approach to address the environmental challenges posed by economic growth.