This week's science news has taken us in a time machine, from the discovery of a 506 million-year-old fossil of a bizarre "sea monster" that breathed through its butt to the death of the universe ...

In about the time it takes to drive from San Francisco to Yosemite Valley or Lake Tahoe, you could be starting a hike to the top of one of California's tallest volcanoes. September is the magic month ...