Word: zero
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Dates: during 1900-1909
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...made by sending up a rubber balloon which carries a basket containing instruments. As the balloon rises the hydrogen expands it until the balloon bursts, when the instruments fall to the ground. A height of eleven miles has been reached in this manner, a temperature of 111 degrees below zero, and a wind velocity of 101 miles an hour...
...winter the temperature there ranges, on the average, about 28 degrees below zero; while at times it is as low as 50 degrees. The sun is below the horizon for seventy-two days in the year. The temperature in summer sometimes rises to 60 or 65 degrees and during the summer months the ground thaws out to a depth of about two feet, while below that it is frozen to unknown depths...