How an exercise-activated enzyme helps to keep the brain young

· · 来源:train资讯

I suspect rather strongly that premodern people, too, experienced the physical world more acutely than I do, simply because my brain has been stewing in dopamine-spiking stimuli for four decades now, rarely pausing to touch the proverbial grass. Don’t get me wrong: I like the outdoors a lot. But my waking existence is spent mostly indoors in highly artificial spaces, whereas humans have typically spent the vast majority of their time outdoors in nature. Consider my ancestors, who, as best I can tell, were primarily illiterate peasants and smallhold farmers. They spent a significant proportion of their waking hours literally touching grass.

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Two influential Brazilian politician brothers have been convicted by Brazil’s supreme court of ordering the murder of Marielle Franco, the Rio de Janeiro city councillor, nearly eight years ago.

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