Toshiba rolled out a four-legged robot designed to clean up after nuclear disasters.
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Oxford Dictionaries declared 'climate emergency' as the word of the year for 2019.
The Georgia Dome in Atlanta was blown to smithereens in a controlled demolition.
Beethoven premiered Fidelio in Vienna, Austria, which was his only opera.
Snake fossils found in Rio Negro Province, Argentina, showed snakes with hind legs that lived over 70 million years ago.
English singer-songwriter Adele released her third studio album, '25.'
