Everyone has one nostril that is larger than the other.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Species-rich floras of chalk grassland compared to species-poor floras of acid soils.
Species-rich floras of chalk grassland compared to species-poor floras of acid soils.