Very rough guesses put the risk of existential catastrophe due to nuclear winter and climate change at around 0.1%, with the odds of a pandemic causing the same kind of collapse at a frightening 3%.

粗略估计，生存灾难的概率关系到核冬天和气候变化在 0.1% 左右，而一场疾病大流行导致类似灾难的概率是可怕的 3%。