If we’re interested in signs of impending global crisis, there’s no need to stop with just these two global challenges [climate related]. The world is losing 25 billion tons of topsoil a year due to current industrial agricultural practices; if we don’t deal with that issue, civilization will still crash even if we do manage to ace our energy and climate test. Humanity is also over-using fresh water: ancient aquifers are depleting, while other water sources are being polluted. If we don’t deal with our water crisis, we still crash. Species are going extinct at a thousand times the pre-industrial rate; if we don’t deal with the biodiversity dilemma, we still crash. Then there are social and economic problems that could cause nations to crumble even if we manage to protect the environment; this threat category includes the menaces of over-reliance on debt and increasing economic inequality. Continue reading →