SN Online SN Online Share this:EmailFacebookTwitterRedditPrint By Science News October 21, 2011 at 1:07 pm DELETED SCENES BLOG An orbiting camera catches dust devils whirling at high speeds on the Red Planet. Read “HiRISE clocks hurricane-speed winds on Mars.” ATOM & COSMOS Astronomers get a new odometer to measure faraway objects. See “Longer cosmic ruler based on black holes.” ENVIRONMENT A warming climate could be making elk more destructive to forests. Read “When snowpack shrinks, elk can binge on aspen.” Some kinds of pollen can precipitate more than allergies. See “ Cloud seeding by trees could alter precipitation, climate .”