There are no simple steps worth caring about. We'll only head off disaster by taking steps -- together -- that are massive, societal and thorough. Most of what needs to be done involves political engagement, systems redesign, and cultural change. It can't be done in an afternoon and then forgotten about.
So screw the little things. Here are 10 big, difficult, world-changing concepts we can get behind.

1. ELIMINATE NUCLEAR WEAPONS
2. STABILIZE THE BOTTOM BILLION
3. CREATE A GLOBALLY TRANSPARENT SOCIETY
4. BE PREPARED, GLOBALLY
5. EMPOWER WOMEN
6. ENABLE A FUTURE FORWARD DIET
7. DOCUMENT ALL LIFE
8. NEGOTIATE AN EFFECTIVE CLIMATE TREATY
9. BUILD BRIGHT GREEN CITIES
10. BUILD NO NEW HIGHWAYS