Costa

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Urbanization has led some Costa Rican water sources to exceed safety levels: Study

In each water sample, researchers examined nitrate isotopes, which are unique, allowing the team to trace the water sample back to where it originated. Credit: University of Texas at Arlington Four decades of changes in land use in central Costa Rica have increased nitrate concentrations in drinking water, in some areas to potentially unsafe levels

Costa Rican sloth antibiotics offer hope for human medicine

Experts say sloths appear to be infection resistant. The fur of Costa Rican sloths appears to harbor antibiotic-producing bacteria that scientists hope may hold a solution to the growing problem of “superbugs” resistant to humanity’s dwindling arsenal of drugs. Sloth fur, research has found, hosts bustling communities of insects, algae, fungi and bacteria, among other…

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