Wikipedia:Main Page history/2015 December 17

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Harry Glicken

Harry Glicken (1958–1991) was an American volcanologist who researched Mount St. Helens before and after its dramatic eruption in 1980. Despite a long-term interest in working for the U.S. Geological Survey, Glicken never received a permanent post there because employees found him eccentric. Conducting independent research sponsored by the National Science Foundation and other organizations, Glicken accrued expertise in the field of volcanic debris avalanches. He wrote several major publications on the topic, including his doctoral dissertation on Mount St. Helens. In 1991, while conducting avalanche research with volcanologists Katia and Maurice Krafft on Mount Unzen in Japan, Glicken was killed by a wayward pyroclastic flow. Glicken and David A. Johnston (who died at Mount St. Helens) remain the only American volcanologists known to have perished in volcanic eruptions. After Glicken's dissertation was published by his colleagues in 1996, the report was widely cited. His detailed and comprehensive work on flows at Mount St. Helens is considered the most complete in the field to date. (Full article...)

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Ni Zhifu operating his drill
Ni Zhifu operating his drill

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Soyuz TMA-19M
Soyuz TMA-19M

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December 17

The Wright Flyer
The Wright Flyer

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Common kingfisher

The common kingfisher (Alcedo atthis) is a small kingfisher with seven subspecies recognized within its wide distribution across Eurasia and North Africa. It is resident in much of its range, but migrates from areas where rivers freeze in winter. This sparrow-sized bird feeds mainly on fish, caught by diving, and has special visual adaptions to enable it to see prey under water. The glossy white eggs are laid in a nest at the end of a burrow in a riverbank.

Photograph: Andreas Trepte; edit: Hans Hillewaert

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