April 29, 1999
April 29, 2000
April 29, 2001
April 29, 2002
April 29, 2003
April 29, 2004
April 29, 2005
April 29, 2006
April 29, 2007
April 29, 2008
April 29, 2009
May 2, 2010
Solar Activity
April 29, 1999
World of Change
- Antarctic Sea Ice
- Arctic Sea Ice
- Fire in Etosha National Park
- Green Seasons of Maine
- Mountaintop Mining, West Virginia
- Shrinking Aral Sea
- Water Level in Lake Powell
- Columbia Glacier, Alaska
- Antarctic Ozone Hole
- Drought Cycles in Australia
- Recovery at Mt. St. Helens
- Athabasca Oil Sands
- Burn Recovery in Yellowstone
- Severe Storms
- Seasons of the Indus River
- Urbanization of Dubai
- Amazon Deforestation
- Global Temperatures
- Seasons of Lake Tahoe
- Solar Activity
- Larsen-B Ice Shelf
- Mesopotamia Marshes
- Yellow River Delta
- El Niño, La Niña, and Rainfall
- Global Biosphere
