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Scientists solve 200-year-old puzzle of how tobacco plants make nicotine

Scientists solve 200-year-old puzzle of how tobacco plants make nicotine
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Scientists have uncovered how tobacco plants naturally make nicotine, solving a mystery that has puzzled researchers for nearly two centuries. The discovery, published in Nature Communications, could lead to safer production of medicines and vaccines using tobacco plants, without the unwanted nicotine.

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Blue and fin whale sightings on the rise in the Southeast Atlantic

More than 40 years after the end of commercial whaling, new research reveals a recent increase in sightings of the world's two largest whale species in the southeastern Atlantic. The findings, published in the African Journal of Marine Science, compile more than 60 years of confirmed sightings and strandings from Namibia and South Africa's west coast. Although overall numbers remain low, sightings of both species have increased markedly in recent years—with 95% of observations recorded since 201

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