The phosphorus at the bottom of the ocean has to somehow make its way back to the surface, to complete the cycle, to begin the cycle all over again.

海底的磷必须找到某种方式回到表面，以完成这个循环，从而重新开始这个循环。

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The gradual drying of the soil caused by its diminished ability to absorb water results in the further loss of vegetation, so that a cycle of progressive surface deterioration is established.

土壤吸收水分的能力减弱使土壤逐渐变得干燥，导致植被进一步减少，从而建立了一个渐进的地表退化循环。

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Scientists also believe it may also be possible that during the next upturn of the cycle, when solar activity increases, there might be a cooling effect at the Earth's surface.

科学家们相信，在周期的下一个上升期，也就是在太阳活动趋于频繁时，可能会对地球表面产生冷却效应。

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It's unlikely any aliens call Kepler-37b home: it's thought to be rocky, with no atmosphere, and hugs its sun in a 13-day orbit cycle, meaning surface temperature is terribly high.

ENGADGET: NASA's Kepler telescope spies smallest planet to date, no aliens

The 60-year cycle is particularly easy to observe in significant surface temperature maxima that occurred in 1880-1881, 1940-1941, and 2000-2001.

FORBES: Global Warming? No, Natural, Predictable Climate Change

Power and duty cycle: This is one of the critical flaws in the Surface Pro, and in my view, will be a real negative to anyone that wants to use this as a substitute laptop when traveling.

FORBES: Why You Want The Microsoft Surface Pro (And Why You Don't)