In the past fifty years, wealthy nations including the U.S. have given $1 trillion in aid to the continent of Africa. And yet, many African countries remain mired in poverty. So is it time to rethink aid to Africa? The Takeaway talks to Dambisa Moyo an economist and author of the book Dead Aid: Why Aid is not Working and How there is a Better Way for Africa. We are also joined by Lynn Sherr, journalist and Africa correspondent for PBS's World Focus.

For more from Dambisa Moyo, watch the clip of her discussing African aid below.

It's the day after World Water Day, a day highlighting the issues facing countries with scarce water resources. The issue of clean water is clearly important, but Rose George, author of The Big Necessity, The Unmentionable World of Human Waste and Why It Matters, suggests we also need a World Sanitation Day.

For more on the importance of clean water and sanitation, watch the video from the International Federation Global Water and Sanitation Initiative (GWSI) in action at the Zambia Red Cross Society:

The news of Bernard Madoff and the billions of dollars lost in his worldwide Ponzi scheme reinforces the connection between money and corruption. It’s a relationship that is also evidenced in countries such as Zimbabwe, Somalia and the Congo—in these nations corruption can been seen as a force that’s impeding economic development. For insight into how poverty and global corruption contribute to many of today's international crises The Takeaway turns to economist Edward Miguel. Miguel is the co-author of the new book "Economic Gangsters: Corruption, Violence, and the Poverty of Nations."