Use Left and Right arrow keys to change years. When filling in the years, start with the most negative number. (Example: -56) Then a lesser negative number. (Example: -32) Then a positive number. (Example: 23) Lastly, a more positive number. (Example: 86) Hope that is clear enough. :P
Glacier Melting have been a big problem. Here I capture the Peru's Quelccaya ice cap shrinking about 4.7 meters a year (which is a lot). Now it is retreating a lot more unfortunately. Source: http://en.wikipedia.org/wiki/Quelccaya_Ice_Cap
