![The northern lights—caused by solar or geomagnetic storm—float over Tromsø, Norway. The northern lights—caused by solar or geomagnetic storm—float over Tromsø, Norway.](https://images2.minutemediacdn.com/image/upload/c_crop,w_2121,h_1193,x_0,y_0/c_fill,w_1080,ar_16:9,f_auto,q_auto,g_auto/images/voltaxMediaLibrary/mmsport/mentalfloss/01j06kwvhxva1t3yhxkz.jpg)
![Julie Fogerson Julie Fogerson](https://images2.minutemediacdn.com/image/upload/c_fill,w_180,ar_1:1,f_auto,q_auto,g_auto/shape/cover/sport/Avatar-a04e41248f2e113451506fc15951e776.png)
Julie Fogerson
Joined: Sep 24, 2021
![The northern lights—caused by solar or geomagnetic storm—float over Tromsø, Norway. The northern lights—caused by solar or geomagnetic storm—float over Tromsø, Norway.](https://images2.minutemediacdn.com/image/upload/c_crop,w_2121,h_1193,x_0,y_0/c_fill,w_1080,ar_16:9,f_auto,q_auto,g_auto/images/voltaxMediaLibrary/mmsport/mentalfloss/01j06kwvhxva1t3yhxkz.jpg)
![Signs of an earthquake. Signs of an earthquake.](https://images2.minutemediacdn.com/image/upload/c_crop,w_683,h_384,x_0,y_98/c_fill,w_1080,ar_16:9,f_auto,q_auto,g_auto/images/voltaxMediaLibrary/mmsport/mentalfloss/01hsya60tzcvx0d0589x.jpg)
10 of the Biggest Earthquakes in History
![Snow blankets the Donner Lake area in California’s Sierra Nevada mountains. Snow blankets the Donner Lake area in California’s Sierra Nevada mountains.](https://images2.minutemediacdn.com/image/upload/c_crop,w_8256,h_4644,x_0,y_0/c_fill,w_1080,ar_16:9,f_auto,q_auto,g_auto/images/GettyImages/mmsport/mentalfloss/01hr7g0xvp80mfdda1sm.jpg)
10 of the Biggest Blizzards in History
![Vienna’s Wienflussportal, showing the spot where the Vienna River emerges from its underground course. Vienna’s Wienflussportal, showing the spot where the Vienna River emerges from its underground course.](https://images2.minutemediacdn.com/image/upload/c_crop,w_1023,h_575,x_0,y_0/c_fill,w_1080,ar_16:9,f_auto,q_auto,g_auto/images/voltaxMediaLibrary/mmsport/mentalfloss/01hp22jgptw84sxg4fr0.jpg)
10 Rivers Buried Under Cities
11 of History’s Most Famous Sea Voyages
Throughout history, sea travel has provided a watery road to modern globalism. Here are 11 incredible sea voyages that advanced our understanding of the world.
12 Disappearing Glaciers Around the World
If you want to behold some of the world's most majestic glaciers on six continents, you better act fast.