More Turmoil on Earth-Sensing Satellites

First officials with the $15 billion National Polar-orbiting Operational Environmental Satellite System (NPOESS) missed Monday's deadline, set by Congress, to propose management and budget changes to the program. Now we've learned that the executive director of the program, Dan Stockton, stepped down late last month.

Last year, a high-profile review panel said NPOESS had an "extraordinarily low probability of success" and urged the White House to act. The program is one of President Barack Obama's biggest science-related headaches, so there may be big changes coming for NPOESS with the budget rollout next month.