Don't you just love it when you can say "I knew that!", "I told you!"
I did not have the hard evidence to prove it but I have been all the time arguing that the human molecular clock estimates (even by the standard Zhivotovski's compensated system) must be much older than normally claimed, at least twice.
Now penguins come to confirm my suspicion.
DNA from dead penguins that has remained frozen in Antarctica extreme conditions has demonstrated that the usual molecular clock age estimates are underestimated by 200 to 600 per cent.
In other words, a biological specimen determined by traditional DNA testing to be 100,000 years old may actually be 200,000 to 600,000 years old...
Source: Science Daily.
Original report: S. Subramanian et al., High mitogenomic evolutionary rates and time dependency. Trends in Genetics, 2009 (paywall).