Fossilised Fence Posts - a podcast by Dr Chris Smith

Petrified wood is a type of fossil, but some claim to have seen wooden fence posts that have already become petrified. Is it scientifically possible for wood to fossilise in such a short period? We ask how petrified wood is formed, and what exactly does it consist of? Plus, you may instinctively be able to count three items in a pile, but how many items before you have to stop and count? Like this podcast? Please help us by supporting the Naked Scientists

Further episodes of Question of the Week, from the Naked Scientists

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Website of Dr Chris Smith