In a lackluster economy, there hasn't been much from OPEC members to suggest there was any sort of revival, Graeber writes. But with seven of the 12 members of the cartel experiencing at least some form of upheaval, the cost of doing business suggests members may need more than a little bit of luck to return to glory.
Although an economic boon, tourism can be a destructive force for the environment. Israel, filled with religious tourism destinations, is exploring ways to make pilgrimages sustainable.
In impoverished areas, people spend $1 to $2 per day to burn charcoal or wood to cook food, a huge expensive for them. A clean-burning cookstove cuts that cost by more than half.