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A new helium reservoir discovered in Minnesota could solve a major world problem and our concept of time may not be measured in the manner you think. Plus, on This Day in History, Alexander Mackenzie becomes the first European to cross North America north of Mexico.
Learn more about your ad choices. Visit megaphone.fm/adchoices
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A new helium reservoir discovered in Minnesota could solve a major world problem and our concept of time may not be measured in the manner you think. Plus, on This Day in History, Alexander Mackenzie becomes the first European to cross North America north of Mexico.
Learn more about your ad choices. Visit megaphone.fm/adchoices
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