where can i find info on shrinking glaciers?
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This is a real nice article I found on the NASA site.\nhttp://www.nasa.gov/vision/earth/lookingatearth/greenland-20060216.html  tftp
387450
this should help             http://earth.google.com/
883515
Try http://earthquake.usgs.gov/ Thats where I go whenever I want to look up anything on current/recent earthquakes.
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http://en.wikipedia.org/wiki/Antartica
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I would go to www.usgs.gov  this is the site for the united states geological survey
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http://www.education.noaa.gov/\nOn this website, you can access many educational activities, publications and booklets on the following topics: Satellites and space, oceans and coasts, climate change and our planet, and weather.
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Try http://googleearth.com\nMaster.
200577
http://www.nature.com/nature/index.html
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http://earth.google.com/
1009630
As reported in an article by Charles Arthur in the June 8, 1999 edition of The Independent in England, new information has been gathered by scientists at the Jawaharlal Nehru University in Delhi, India, regarding how the glaciers in the Himalayas are retreating. As we had explained, the glacier above Gangotri, from which the Ganges River starts, has retreated about one kilometer in the past 20 years or so. In fact, it has been determined that these glaciers are retreating faster than anywhere else on the planet. Professor Syed Hasnain, the main author of the report, relates that all of the glaciers in the middle Himalayas are retreating. He warns that many of the glaciers in this region could disappear by 2035. New fears are that the meltwater could produce catastrophic floods as mountain lakes overflow.\n\nhttp://www.stephen-knapp.com/disappearance_of_the_ganges.htm
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I did some research... here are some websites that might help...\n\nThe 2nd one is a map quiz that will help you learn more about the physical features.
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Try this website:  http://volcano.und.edu/
883519
There is not really something like a critical point for glaciers. As long as temperatures are rising and are resulting in a negative mass balance the glaciers will keep on melting. But that's not irreversible - thinking rather in "geological" time scales, decades or hundreds or thousands of years. As soon as the mass balance gets positive (due to temperature and/OR more precipitation) glaciers will grow again.\n\nThinking e.g. of a huge volcanic eruption or a comet / asteroid hitting the earth and blowing dust into the atmosphere blocking sun light, that might lead to a global "freezing", maybe even to a next ice age.
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www.onthesnow.com is pretty good if you want to look at a whole bunch of ski areas.  Otherwise, I usually look at the ski area's own web site.  Those will be the most up to date.  Onthesnow updates once a day I believe.
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Signs of scraping on the rocks as the glaciers went by.\n\nShallow lakes left behind (tarn lakes, kettle lakes and Pater Noster lakes)\n\nGlacial till, or material pushed by the glacier like a bulldozer and then left behind in mounds. These mounds are called moraines.
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Try National Geographic Magazine website.
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Bairdt found a good website for the information, but Id like to point out that the North Pole does NOT have a glacier--the North Pole is covered by the Arctic Ocean--the surface of which is frozen as sea ice (not glacial ice).  I think sea ice can be as much as 10 feet thick, though.  Antarctica (around the South Pole) contains two continental ice sheets--the West Antarctic Ice Sheet (WAIS) and the East Antarctic Ice Sheet (EAIS).\n\nContinental glaciers are defined by their size (they cover very large areas of land and/or shallow ocean floor) and by their flow characteristics.  Since they are so large, they may have several different areas of accumulation, but generally flow in a radial pattern--similar to how pancake batter flows radially when you plop a spoonful onto a griddle.\n\nA valley glacier (or alpine glacier) is restricted to a valley.  They generally form at high altitudes near the divides in mountain ranges.  The initial valley they start in is called a cirque.  A small glacier occupying a cirque is called a cirque glacier (see #1 below--theres a bunch of little glaciers sitting in cirques).  When enough snow falls over a period of years, the glacier grows and flows down mountain valleys.  It then becomes a valley glacier.  #2 below is a great photo of a valley glacier--it looks like a river.  A valley glacier can ultimately flow out of its valley onto a piedmont and spread out.\n\nAs Bairdt pointed out, valley glaciers erode the walls of the valley they occupy.  The glaciers flow characteristics cause the valley to look u-shaped if you look at it in cross-section (check out #3 below!  That is as perfect a u-shaped valley as you will ever see).  Stream valleys are typically v-shaped.\n\nCheck out #4--a continental ice sheet.  Note that as far as you can see is ice.