. >> ifill: betty ann bowser reports on the explosion in the number of cases of type two diabetes among children, a trend with frightening consequences. >> my grandfather, he lost his eyesight from diabetes and my dad was like "you don't want to lose your eyesight, do this, do that." i think losing my eyesight scares me the most. losing a limb scares me but not as much as losing my eyesight. >> woodruff: jeffrey brown remembers ray bradbury, whose tales of science fiction and fantasy captured the imaginations of generations of readers. >> ifill: and in the latest installment in our "american graduate" series, ray suarez talks to teachers about testing and accountability. >> woodruff: that's all ahead on tonight's "newshour." major funding for the pbs newshour has been provided by: >> growing up in arctic norway, everybody took fish oil to stay healthy. when i moved to the united states almost 30 years ago, i could not find an omega-3 fish oil that worked for me. i became inspired to bring a new definition of fish oil quality to the world. today, nordic natuls is woing to fulfill our mis