We can't know for sure when or where the next crisis will hit -- only that it will. But despite these certainties, most cities are woefully unprepared to manage these shocks. Now is the time to help cities build resilience.

Amazing things happen when you bet on people -- including entire transformations. But with this ability comes great responsibility, in all of our work, to grapple with the big moral questions of our day.

There is still no machine that can match the power of human ingenuity to solve truly human problems. And therefore, "backing brains" has always been a key part of philanthropy's strategy.

Haiti is over 95 percent deforested, largely due to the population's reliance on charcoal cooking fuel. Finding a sustainable alternative cooking fuel that is accessible and affordable for residential and commercial use is a top priority.

Last week, I discussed role of philanthropy as risk-taker – taking on the hardest parts of the work so that the private and public sectors can c...

Risk is philanthropy's calling card -- it's what our philanthropic dollars, at least in the United States, are now tax-advantaged to do. If we're not taking enough risk, we're clearly not doing everything in our power to maximize impact for the poor or vulnerable.

Want to know how much McDonald's charges for Big Macs in more than 40 different countries? No problem. But want to know where children are allowed to work in mines, with poisonous chemicals, or through the night? Good luck! We decided to take steps to begin to fill these gaps.

The ecosystem of an educational institution has the capacity to create change, provided we give a platform where ideas can nourish and flourish. By student sourcing global development, we will match the toughest problems with our most prized resource of all: creativity.

Malala Yousufzai's story is important not only as a news story, but as a human rights impact story -- and what it can inspire about our desire to get involved and "take action." When we see and hear a story like hers, we want to do something.

Over the last few decades, China, once regarded mainly as an aid recipient, has become an influential partner in global health and development.

Working together through the Global Strategy, we have seen how sound planning, sufficient resources and political will, can make a significant difference in the lives of millions. But the global community can still do much better.

The vast growth it has seen is proof that the Grameen Bank's brand of group lending -- which relies on peer pressure rather than collateral to ensure that debts are repaid -- can work in America.

bringing the benefits of agricultural development to the farmers at the end of the road, is the challenge within the challenge.

I don't want you to think that you need to pack and fly abroad to raise global citizens. It still is the ideal, but there are so many local opportunities you can find where your kids can engage in social good.