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If Jurassic Park wasn鈥檛 far-fetched enough for you, try this. The leaves on prehistoric trees may have behaved like gramophone needles, recording the roars of dinosaurs, claims Brian Wybrow of London (GB 2364819). He says that some fossilised leaves with an 鈥渦nexplained, unusual wavy surface鈥� may originally have been covered with natural wax that was scratched by the spiny tip of another leaf. This, Wybrow reckons, could have acted as a stylus, impressing the waveform of sounds from dinosaurs鈥� in much the same way as Thomas Edison used a stylus and a wax cylinder to record his own voice. But why patent it? You never know鈥攃loned dinosaurs might one day claim copyright鈥�