The process of photosynthesis traps energy from the Sun and stores it in chemical bonds in carbohydrate molecules, most notably in the six-carbon sugar called glucose.
The most accurate clocks in the world are the new atomic fountain clocks, in which thousands of extremely cold atoms are tossed gently into a vacuum chamber, where they fall under gravity's pull. The vibrations of the atoms at the top of the fountain are measured, where they are practically motionless for a fraction of a second before they fall.
Duplication in the human genome is more extensive then it is in other primates. About 5% of the human genome consists of copies longer than 1,000 bases.
The earthquake that rocked South-central Alaska on March 27, 1964, was the second-largest ever recorded. The magnitude 9.2 earthquake trails only a 9.5 recorded in Chile in 1960.
The second according to atomic time is defined as exactly 9,192,631,770 oscillations or cycles of the cesium atom's frequency. This replaced the old second that was defined in terms of the earth's motions.
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