Word: sunlight
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Dates: during 1980-1989
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...Cretaceous period (136 million to 65 million years ago). No one knows exactly what killed the dinosaurs, although a radical change in environmental conditions seems a likely answer. One popular theory is that a huge meteor crashed to earth and kicked up such vast clouds of dust that sunlight was obscured and plants destroyed. Result: the dinosaurs starved to death...
...earth's surface inflicts plenty of damage: besides causing sunburn, the rays have been linked to cataracts and weakened immune systems in humans and other animals. Ultraviolet light carries enough energy to damage DNA and thus disrupt the workings of cells, which is why excessive exposure to sunlight is thought to be the primary cause of some skin cancers...
Higher construction decreases the amount of sunlight on the streets, he said, in addition to changing the character of the city...
...Biochemistry near Munich, received his telephone call from Sweden, the champagne was readily at hand. Huber, 51, and fellow West Germans Johann Deisenhofer, 45, and Hartmut Michel, 40, were recognized for revealing the "atom by atom" structure of the molecule at the heart of photosynthesis, the process by which sunlight is converted into the chemical energy that fuels plant and animal life...
...speed for the descent into the atmosphere. Accounts of what happened next differ, but indications are that as the ship passed through a twilight region of space between day and night, an infrared sensor, which fixes the spacecraft's position in relation to earth, was confused by rays of sunlight. The unexpected signal caused the computer to abort the normal firing...