Weather radar that measures direction and speed of a moving ...
Villarrica, one of Chile's most active volcanoes erupted in ...
Dead Mountain is a mountain located in the northern Urals ...
Seismometers are instruments that measure motions of the ...
Recycling is a process to change materials (waste) into new ...
The iceberg that sank the Titanic on April 15, 1912 was ...
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