A joint Mexico-U.S. effort to build a monster radio telescope in Mexico is causing concerns because the project, the Large Millimeter Telescope, is part of a U.S. Defense Department effort to develop the target acquisition and directed-energy technology needed for anti-satellite warfare.
For the first time, and with Bush administration support, NASA intends to develop a nuclear-powered spaceship. But some oppose the plan over fears of a nuclear accident.
Intelligence agencies are worried commercial airliners might be susceptible to electronic interference by terrorists using modified cellphones or other electronic devices to disrupt navigation and control systems.