Is travel the secret to a long life?

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Feeling old and shunned, legendary writer Paul Theroux leaves the US and journeys to a country that reveres the elderly.

I was that old gringo. I was driving south in my own car in Mexican sunshine along the straight sloping road through the thinly populated valleys of the Sierra Madre Oriental – the whole craggy spine of Mexico is mountainous. Valleys, spacious and austere, were forested with thousands of single yucca trees, the so-called dragon yucca (Yucca filifera) that Mexicans call palma china. I pulled off the road to look closely at them and wrote in my notebook: I cannot explain why, on the empty miles of these roads, I feel young.

And that was when I saw a slender branch twitch on the ground; it lay beneath the yucca in soil like sediment. It moved. It was a snake, a hank of shimmering scales. It began to contract and wrap itself – its smooth and narrow body pulsing in the serpentine peristalsis of threat, brownish, like the gravel and the dust. I stepped back, but it continued slowly to resolve itself into a coil.

Not poisonous, I learned later. Not a plumed serpent, not the rearing rattler being gnawed by the wild-eyed eagle in the vivid emblazonment on the Mexican national flag. It was a coachwhip snake, as numerous on this plain as rattlesnakes, of which Mexico has 26 species – not to mention, elsewhere, milk snakes, blind snakes, rat snakes, pit vipers, worm-sized garden snakes and 10-foot-long boa constrictors.

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