Round the bend
Look carefully at this photo of a rainbow over Dinas Head near Fishguard in Wales (above) and you will notice that as it nears land it looks like there is a sharp bend in its arc. What caused this?
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A degree of uncertainty
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Feedback: North American eclipse heralds arrival of doomsayers
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Space
Win lunch with an astronaut
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Gas-filled black balloons create eerie floating worlds
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Space
Bringing the Royal Observatory at Greenwich back to life
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Feedback: NASA seeks a planet-protecting superhero
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Seasons in the sun
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Life in the Dome
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Turning over a new leaf
I'm puzzled by beech trees. They are deciduous and their leaves turn bronze in the autumn, but they don't fall off the tree. Instead, they hang on until spring when other plants are putting out their new leaves. How do these trees benefit from this different approach to deciduousness?
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Ol’ Blue eyes
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Environment
Endangered animals 鈥� and made-up beasts 鈥� drawn with gonzo charm
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It’s a steel
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Cloning to the rescue
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