Global Warming

I'm more of a fan of LEDs, but I love this, and it is SO true! We HAVE to get our energy usage back to sane levels, or we're in trouble. If a nuclear submarine's CO₂ scrubbers break down, or the CO₂ levels overwhelm them, they can surface and open the hatches. If something similar happens on the International Space Station, and they can't fix it, the crew can pile into the Soyuz capsules and evacuate to the Earth. But Spaceship Earth has no escape pods, and there's nowhere to evacuate to. If the ecosystem - Spaceship Earth's life-support system - can't absorb the drastically increased CO₂ levels, we may well have nowhere to go but extinct.