Plug the power cord on the AC power supply into the DC connector on the back of the speaker. Plug the AC power supply into a live AC (mains) outlet. The speaker emits a tone to confirm connection to AC power, and charging begins. On the front of the speaker, the battery status indicator blinks yellow to show the battery is charging.
This Landsat satellite image shows Bering Glacier in Alaska, the largest glacier in North America. Although the glacier has been retreating and thinning recently, it still surges about every 20 years or so. âCredit: NASA image by Robert Simmon, based on data provided by the Landsat 7 Science Team.
Some glaciers flow directly into the ocean while others join to form large, thick floating ice shelves. The Pine Island Glacier, flowing at over 10,000 feet per year, is believed to be the fastest Antarctic glacier. And the largest ice shelf is the Ross Ice Shelf, roughly the size of Texas. Snow falling on the surface does not stay on the surface, but takes a deeper journey through the ice sheet as it is buried by subsequent snow and is compressed into solid ice.