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  1. 50 years ago, scientists thought a desert shrub might help save endangered whales

    Fifty years ago, scientists sought a sustainable alternative to prized oil from endangered sperm whales.

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  2. Health & Medicine

    How I’ll decide when it’s time to ditch my mask

    New COVID-19 masking guidelines are designed for communities not individuals, making a decision about safety difficult.

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  3. Animals

    Here’s how boa constrictors squeeze their dinner without suffocating themselves

    Carefully controlled breathing allows boa constrictors to pull off their signature move without cutting off their own air supply.

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  4. Climate

    Forests help reduce global warming in more ways than one

    Trees are often touted as bulwarks against climate change for their capacity to sequester carbon, but that’s just one part of the story.