woodruff: from gender discrimination to military funerals to climate change, we look back at this year s consequential supreme court term, with analysis from marcia coyle and tom goldstein. ifill: and margaret warner talks with the u.s. special envoy for sudan on the mounting violence there, as the nation prepares to split in two. out of fighting more than 70,000 people have been displaced. we re very concerned about getting humanitarian aid into those areas. woodruff: that s all ahead on tonight s newshour. major funding for the pbs newshour has been provided by: okay, listen. somebody has got to get serious. i think. we need renewable energy. .renewable energy is vital to our planet. you hear about alternatives, right? wind, solar, algae. i think it s got to work on a big scale. and i think it s got to be affordable. so, where are they? it has to work in the real world. at chevron, we re investing millions in solar and biofuel technology to make it w