The current findings, which highlight ties between facial aging and potentially avoidable environmental factors: smoking, being overweight, and unprotected overexposure to the sun's damaging rays.

目前的这项发现强调了皮肤老化和可避免的环境因素之间的关系，如抽烟、体重超标、无防护措施地过度日晒等。

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Their analysis of environmental skin-damaging factors in 65 pairs of twins hints that skin aging is related more to environment and lifestyle than genetic factors.

研究人员对65对双胞胎的皮肤损伤环境影响因素进行分析后发现，环境和生活方式对皮肤老化的影响大于遗传因素。

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"I am glad to see an expanded analysis which more fully documents the environmental influence on human and primate mortality during aging," he told Discovery News.

他对《探索新闻》说：“我非常高兴有人在这方面进行深入研究，他们的分析更全面地记录了在衰老的过程中，环境对人类和灵长类死亡率的影响。”

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China will have to do something about it or risk increasing environmental hazards that eventually lead to health crises in this aging population of 1.3 billion.

FORBES: Just How Big Is China? Bigger Than You Think

John Long, vice president and chief technical officer of the Midwest Generation unit, thinks he can coax another 15% increase out of those aging boilers over the next five years without running afoul of environmental rules.

FORBES: Indigestion

Longevity genes appear to slow down the aging process by making cells and tissues more stress-resistant, better able to withstand the inevitable environmental insults that accumulate over a lifetime from bad diet, inflammation, radiation, genetic mutations and toxic chemical by-products called free radicals.

FORBES: Researchers are unlocking the mysteries of aging.