• What the Thermometers Show

  Air temperature is one of the most easily measured indicators of climate.
  Changes in temperature can affect the length of the seasons and can have both
  positive and negative impacts on ecosystems and human activites.

• What the Glaciers Show

  Many glaciers are smaller now than they have been in approx. 3000 yrs.

• What the Trees Show

  Since trees at timberline are very sensitive to climate, many people thought that any change in climate would bring big changes to our forests. Well, there are changes, but they might not be what you expect to find.