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A twist on the candle mystery

In a classic demonstration of the candle mystery, three lit candles of different heights are covered with a gas jar (see figure 1) and the tallest candle goes out first. This happens because carbon dioxide produced from burning has a higher temperature, so it rises and accumulates at the top of the…

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Forensic entomology

Are you a biologist with a mission? Do you want to fight crime with science? Martin Hall and Amoret Brandt from The Natural History Museum in London,…

   

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A new tree of life

At the European Molecular Biology Laboratory in Heidelberg, Germany, Peer Bork’s research group has meticulously reconstructed a new tree of life…

   


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