Scientists urge global help on manned Mars mission
MENLO PARK, California (Reuters) - The United States must collaborate with other countries to achieve its goal of putting humans on Mars or it may fall short of its aims, scientists and former space officials said on Thursday. feeds.reuters.com
Skeptics on Human Climate Impact Seize on Cold Spell
Extraordinary winter conditions in many parts of the world have been seized on by those who challenge warnings about dangerous human-caused global warming. nytimes.com