Why are these Alaskan lakes bubbling?
Today’s Video of the Day comes from NASA Goddard and features a look at why many lakes in Alaska are bubbling. It turns out the lakes are emitting methane released by thawing permafrost from the last Ice Age.
Once the permafrost melts, it causes the ground to sink and fill with water, which form these bubbling lakes known as thermokarst lakes.
Video Credit: NASA Goddard