AP - The international space station's lone toilet is broken, leaving the crew with almost nowhere to go. So NASA may order an in-orbit plumbing service call when space shuttle Discovery visits next week.

AP - Another week, another rumbling train of tornadoes that obliterates entire city blocks, smashing homes to their foundations and killing people even as they cower in their basements.

AP - A day after an orbiter's radio shutdown blocked NASA from telling its newly planted Phoenix Mars lander what to do, orders were on the way to get its robotic arm moving.

Reuters - The world is failing in efforts to control an international biotechnology trade ranging from genetically modified crops to the building blocks of biological weapons, a U.N. University study said on Tuesday.

AFP - Nuclear power rather than renewable sources like the wind or sun are the best option for oil-rich Gulf Arab states to meet growing energy demands, especially if produced collectively, say regional experts.

AFP - NASA was to begin deploying the robotic arm on the Phoenix lander on Mars Tuesday to prepare for digging into theplanet's soil in search of the conditions to support life, mission officials said.

AP - Fred Everts held back tears as he surveyed the pile of splintered wood and metal scraps that had been his and his wife's home.

AP - Fresh images sent back by NASA's Phoenix Mars Lander from the Martian northern polar region showed most of its science instruments were in good shape, mission scientists said.

AFP - A NASA probe sent back never-before-seen pictures of Mars' north pole Monday, in the most ambitious mission to date to find if the Red Planet could support life.

Reuters - China launched a second weather satellite on Tuesday to help improve forecasts for this August's Beijing Olympics, state media reported.