Canada
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This is why you want a window seat
I’ve seen auroras on red-eyes between the U.S. and Europe before. This one over Lake Superior, for example, on a July night in 2007. And this one over Greenland in September 2012. But both of those were fairly dim. Sunday night’s red-eye was different. This one was a real show. And I almost missed it. First, my window seat… Continue reading
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It was a little tougher 214,000,000 years ago
Above is the best (or the widest) shot I could get of Lake Manicouagan, which is the largest visible impact crater on Earth. Only three (or maybe four) are larger and none are visible. The Manicouagan impact event happened about 214 million years ago, give or take. That was 14 million years before the end… Continue reading
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Visting a Late Lake
Not long ago as geology goes — nine, ten, twelve millennia — one of the world’s largest lakes covered most of Minnesota, plus much of North Dakota, Manitoba, Saskatchewan, Ontario and a corner of South Dakota. It’s called Lake Agassiz, named after the scientist Louis Agassiz, who figured out the Ice Age (continental glaciation, basically),… Continue reading