Why a volcanic eruption caused a 'year without a summer' in 1816

By Ashley Strickland, CNN

Updated 2306 GMT (0706 HKT) September 17, 2019

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<strong>Castle Frankenstein: </strong>Two centuries after author Mary Shelley conceived "Frankenstein," its gothic echoes can still be found across Europe. Castle Frankenstein near Darmstadt, Germany, was the birthplace of alchemist Conrad Dippel, whose purported experiments on the human bodies may have inspired Shelley.
Photos: On the trail of Frankenstein
Castle Frankenstein: Two centuries after author Mary Shelley conceived "Frankenstein," its gothic echoes can still b