After 50 years of missions to Mars, scientists are unlocking some of the mysteries surrounding a planet that has captivated mankind for millenniums. Will humans ever leave a boot print on Mars?
Yemen elected a new president this week, but one of the conditions for the vote was complete amnesty for the ousted longtime dictator, Ali Abdullah Saleh. Whether that amnesty will eventually be overturned has implications for Yemen, and other dictators in the region.
Kraken skeptics say a new theory proposing the existence of a real-life 200-million-year-old Kraken sea monster involves too much inference and guesswork to be serious science.