One of the islands is about the size of 10 football fields.
Professor David Holland of NYU told Newsweek that the melting "could have a major impact on global sea-level rise over this century and beyond if this loss of East Antarctic ice continues at the present rate."
There are about 400 subglacial lakes around the world, but these are the first scientists believe to be salty.
The glaciers have been shrinking since the 1960s.
A new technique compiled hundreds of thousands of images over seven years.
"This is sort of a dark archaeology, where we benefit from climate change that's making this ice melt."
This heat source is found all over the planet and is extremely difficult to measure.
The fates of lava and ice are forever entwined.
The worst scenario would flood lands that are home to 236 million people.
The 700-foot tall, 300-mile-long wall has been protecting the Seven Kingdoms for thousands of years. Would it hold up on Earth?
The glacier has long been receding.
Less extensive glaciers could mean more volcanic activity.
Fierce volcanic activity near the Vatnajökull glacier between 2014 and 2015 created huge calderas.
Imja Tsho has been rapidly expanding due to climate change.
Rising temperatures have caused an environmental disaster, according to the IOM.
The melt rate has tripled in just the past 10 years.