Tom X. Chao Latest articles by Tom X. Chao Top 10 Battles for the Control of Iraq By Tom X. Chao published 11 March 08 Human Behavior Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1James Webb telescope discovers 'a new kind of climate' on Pluto, unlike anything else in our solar system2NASA spots Martian volcano twice the height of Mount Everest bursting through the morning clouds: Space photo of the week3How do migrating birds know where they're going?41,000-year-old Viking Age hoard has a pendant that may be a cross or Thor's hammer5Missing link star? Why this 'teenage vampire' white dwarf has scientists so excited