translation.en: The truth is that we have already exhausted so much of the easily accessible fossil fuels that we have already entered a far riskier business era, the era of extreme energy.
translation.zh: 事实是，我们已经耗尽了 如此多的易得的矿物燃料 以至于我们已经进入了 极具风险的时代， 极端能源的时代。