Vote for your story of the year - final mopping-up round

This is the final round of voting for the NERS stories-of-the-year polls. So far, there have been eight polls, each covering a different scientific field and I'm going to collate the results of these in the next couple of days. But before I do, there have been a few straggler stories that may deserve a place on the list. Here's your pick:

• You're having fun when time flies
• Ballistic penises and corkscrew vaginas - the sexual battles of ducks
• Groovy teeth, but was Sinornithosaurus a venomous dinosaur?
• Even on mute, TV can perpetuate racial bias
• One gene stops ovaries from turning into testes
• Octopus carries around coconut shells as suits of armour
• The 13,000-year old tree that survives by cloning itself
• Prejudice vs. biology - testosterone makes people more selfish, but only if they think it does