The slow, 40-day rotation period for the newly discovered distant planetoid Sedna is likely not due to the presence of a moon, which could have provided a gravitational tug. About 159 million people live in the 474 U.S. counties that either do not meet the 8-hour standard for ground-level ozone, or cause a downwind county to fail meeting the standard, the U.S. Environmental Protection Agency announced on 15 April. The U.S. National Science Board approved a resolution to allow all full-time and postdoctoral scientists from the Smithsonian Institution to apply for National Science Foundation grants through the agency's normal merit review process. |