We are a water planet but 10% of Earth is covered in ice - ice that is melting in ways that have to be a concern.   

To get a handy view of what is happening in the big areas, Greenland, the Arctic and the Antarctic, NASA have put together a Global Ice Viewer.

You can zoom in on Ilulissat Glacier, which is is depositing icebergs in cubic kilometer denominations equivalent to 9.3 trillion gallons per year - if that sounds like 14 million Olympic-sized swimming pools every 365 days, it is.  Or Antarctica, where ice shelves the size of small U.S. states have collapsed in recent years.

It's handy stuff if you want to show time-lapsed examples of change in the ice levels.  Example: