Data Tips with this icon contain special step-by-step Microsoft Excel graphing instructions for advanced levels.

February 2006 - Winter Wonderland - From ocean water to snow, all of the earth's water is connected through the water cycle. Learn some of the water chemistry behind snow, then track this month's snowfall in your area and at the 2006 Winter Oympics.

January 2006 - Iced In - The winter of 2003-2004 was bone-chillingly cold for many regions of the United States especially the Great Lakes, a major shipping gateway. See how ice formation in the Great Lakes can influence wintertime shipping traffic.

November 2004 - The Heat Is On II: Global Climate Change Revisited - In November 2000, the Bridge Data Tip looked at global warming and where the two presidential candidates stood on the issue. In 2004, we revisit the topic and see where the United States stands four years later.

October 2004 - Haunted by Hurricanes - The 2004 hurricane season was devasting, especially for Florida, bringing to mind many questions. Are hurricanes getting more intense? Lasting longer? More frequent? The answers may be blowing in the wind, but we'll look at hurricane data to try and elicit answers to these questions.

  September 2003 - Hold the Anchovies - In this data tip the Bridge collaborates with the Monterey Bay Aquarium Research Institute to examine the anchovy and sardine stocks in the Pacific. Has commercial overfishing brought these stocks to all-time lows, or might these be natural population fluctations tied to climate change?

April 2003 - Without An Ark - Coastal storms can bring extensive flooding resulting in highly publicized human suffering. But what happens to plants and animals in the wild when their habitat is flooded? Learn about some of the short-term impacts and potential long-term effects of floods on selected freshwater and estuarine organisms. Access real-time streamflow data from the U.S. Geological Survey and plot Hurricane Floyd floods.

October 2002 - The Return of El Niño - Another El Niño event has begun and with it will come a host of temporary climate changes. Follow some of these climate changes over the school year and see how this El Niño event compares to previous ones.

January 2002 - Winter Wonderland - From ocean water to snow, all of the earth's water is connected through the water cycle. Learn some of the water chemistry behind snow, then track this month's snowfall in your area and compare it to the average snowfall for your area.

November 2001 - The Ozone "Hole" - Scientists recently discovered that the ozone hole above Antarctica has ceased increasing in size. This month we'll look at the NASA Earth Observatory's ozone data from the past 20 years to track changes in ozone levels and see if we're on the road to recovery.

November 2000 - The Heat Is On: Global Climate Change - One of the hot topics during the recent presidential election was global climate change. The two key candidates had differing opinions on the subject. With whom, if either, did you agree? Access various greenhouse gas data including the longest continuous record of atmospheric CO₂ measurements in the world and see where you stand on the issue.

August 1999 - Hurricanes! - What exactly is a hurricane, and how is it formed? Who are those brave "hurricane hunters" who fly into the eye of a storm? Real-time coordinates can be accessed during hurricane season to track a hurricane's path, and archived coordinates can be used for practice out-of-season.