UPDATE: Life on Mars - Proof of Martians 'to come this year': Scientific American

Proof of Martians 'to come this year': Scientific American: "Proof of Martians 'to come this year' Final proof that Mars has bred life will be confirmed this year, leading NASA experts believe. The historic discovery will come not on Mars itself but from chunks of the red planet here on Earth. David McKay, chief of astrobiology at NASA's Johnson Space Centre in Houston, says powerful new microscopes and other instruments will establish whether features in martian meteorites are alien fossils."