Slithersmusiczine: President Obama and his family arrived late Friday at the Yosemite Valley National Park as part of a weekend tour to celebrate the 100 anniversary of the creation of the US national park system.
"Make no mistake, climate change is no longer just a threat - it's already a reality", he said from a lectern near Sentinel Bridge in Yosemite National Park. The president, first lady Michelle Obama and their teenage daughters, Sasha and Malia, got a glimpse of the parks' appeal as they toured an underground...