Trails tell tails of how leaf miners conquered Europe

The leaf miner, Cameraria ohridella, still unknown three decades ago, has spread throughout the whole of central Europe. The insect made its way north, west and east by truck and rail. Fighting it seems impossible. However, ...

In cod we trust: DNA test combats fisheries fraud

Scientists on Tuesday said they had devised a DNA test to pinpoint the geographical origins of commercial seafish, in a breakthrough against illegal trawling that threatens fish stocks worldwide.

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