Related topics: air pollution

A chemical criterion for rating movies

A measurable criterion now exists for determining the age rating of films. A group of scientists at the Max Planck Institute for Chemistry in Mainz has found that the concentration of isoprene in cinema air correlates with ...

Milkweed defensive strategy drives away friends of enemies

Over millions of years under attack from insects, milkweed plants have developed considerable defenses. These include incredible toxicity – sufficient to kill a horse or sheep – which emanates from a milkweed's leaves ...

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