Op-Ed

OP-ED CONTRIBUTOR Obama's Pointless Cancer 'Moonshot' By JARLE BREIVIK It's a Catch-22: The longer we live, the more people will get the disease. OP-ED CONTRIBUTOR California's Midlife Crisis By HÉCTOR TOBAR This election year, youthful optimism is in short supply among jaded Angelenos. ROOM FOR DEBATE Should Overcrowded National Parks Have Restricted Access? Tourism is degrading popular natural sites with increased crowds, pollution and conflicts between humans and wildlife. For more opinion, go to NYTimes.com/Opinion »