Some products may act by suffocation of the insects; these may require up to ... These new therapies are unlikely to allow development of resistance in the head louse population.

From the earliest days of human civilization, agriculture has been central to survival. Early farmers practiced diverse, biodiverse farming systems, relying on a combination of trial, error, and natur ...

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Thirty years after the sequencing of the BRCA1 cancer-associated gene, access to genetic tests and awareness about its risks are still too limited.

Livestock health management has evolved over the decades to include disease prevention and growing farm revenue. The most ...

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National Geographic's enterprising photographers have helped readers explore and learn about our beautiful world through their images for more than a century. Here is their best work from the past ...