Need to Know

 
  

Fri., Feb. 18, 2011

Physicist Brian Greene explains the science behind the theory of multiple universes. We provide an update to our previous reports on fracking. Alison Stewart speaks with Michael Wahid Hanna to discuss what may come of Egypt's new political structure. Producer Mona Iskander provides a personal essay on her experience watching the Egypt protests unfold.
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ABOUT NEED TO KNOW

Less noise. More news. PBS's new TV and Web newsmagazine gives you what you need to know — along with a healthy dose of insight, perspective, and wit. Need to Know cuts through the noise of nonstop news to bring you the most compelling stories of the week and of our times, every Friday night and all week long on the Web.
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