WMPT PBS NewsHour April 20, 2012
>> we have the potential during our lifetime, in the next 10 to 30 years, to slay water and energy shortage, hunger, healthcare, educational issues, where we can create a world of abundance, where we can meet the basic needs of every man, woman and child on this planet. >> woodruff: we examine the clean-up efforts in the gulf of mexico two years after the largest oil spill in u.s. history. >> brown: plus, mark shields and david brooks analyze the week's news. >> woodruff: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: bnsf railway. >>...