Environment
Old Scientist: Safety first, from fly killer to plutonium
There are a terrifying number of ways to be unsafe, as a look through the April archives of New Scientist shows
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There are a terrifying number of ways to be unsafe, as a look through the April archives of New Scientist shows
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?