The service tower at Vandenberg Air Force Base rolls back from the Delta II rocket that will carry the Orbiting Carbon Observatory into space.
For the second time, NASA has had to scrub an attempt to put a new carbon-tracking satellite into space. Tuesday's try for the Orbiting Carbon Observatory, dubbed OCO-2, was aborted at 2:56am with less than one minute before launch. OCO-2 is designed to circle Earth from pole to pole, mapping CO2 behavior on a grid similar to the globe's lines of longitude. KQED Science Editor Craig Miller joins us from Vandenberg Air Force Base. Reporter: Craig Miller