Bolsa Família provides small stipends to families in exchange for kids going to school and getting regular checkups. It's been globally imitated, but some Brazilians say 10 years of welfare is enough.
Programs trading cash for behavior change now reach nearly a quarter of all Latin Americans. How do they work?
Unstable Iraq and deep-water Brazil are projected to make up more than half of the global increase in oil production over the next two decades, according to the International Energy Agency. It's not impossible, Cunningham writes, but it’s quite a risky bet.