Elena Renken
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Some animals live longer than they should for their size. Some have shorter lives. And others don't appear to age at all.
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Years before he got diagnosed with Parkinson's, Joy Milne noticed her husband's characteristic scent had changed. The discovery that she could smell his illness has opened up a new field of research.
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A photojournalist in Wuhan, China, portrays a city under quarantine in the midst of COVID-19.