Today's Takeaways: Clean Energy, Domestic Terrorism, Charitable Giving Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Clean Energy: The Next Investment Frontier? The Reporter Who Transformed the AIDS Crisis CDC: Diabetes on The Decline Congress Returns to a Debate on Guns, Planned Parenthood Terrorism in Our Backyards: Inside the Fight Against Homegrown Threats How Income Inequality Stifles Generosity New research suggests that when wealthy people believe their community has high income inequality, they become less generous. ( Santanu Majumdar / Getty ) Produced by PRI and WNYC