Most people get worried about how much energy reserves we have left, but as this graphic shows, that's the least of our problems. The real problem is the materials we use to make things. Energy could be harnessed from eternal sources, like the sun, the wind, or the seas. But there is only a limited amount of elements in planet Earth andwhat's worstbringing them from other planets will prove impractical with our current technology (and the technology that will be available in the next century). In the meantime, copperwhich is everywhere around youwill be gone in about 61 years; antimonywidely used in medicineswill be depleted in 20 years; while indium, rhodium, platinum, or silverwhich are present in many essential consumer electronicswon't last much longer. And those estimations are only valid if we manage to consume half of what we are consuming now. So, unless we really push technology forward, dramatically increase our recycling rhythm, or something extraordinary happens firstlike Apophis obliterating us or the Large Hadron Collider blows us to another dimension, or Nazi zombies getting out of their crypts to make bacon of all of uswe and our children are going to have a really hard time pushing the world forward. I guess we will have to keep taking life one weekend at a time. 源自： http://i.gizmodo.com/5219598/how-long-will-our-world-last-yes-we-are-screwed
标签: 资源枯竭
