Sacramento Bee: President Barack Obama will seek to make the case Friday for the urgency of fighting climate change with a speech at a California Walmart, but hes faced with apathy among the public and hostility from congressional Republicans. Obama has launched a public relations campaign in the wake of Tuesdays release of the National Climate Assessment, in which federal scientists focused on individual regions of the country as they warned of rising sea levels, extreme storms, heat waves, droughts and other...