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- A Hole in the Ozone- Acid Rain- Aerosols- Climate Variability- Extreme Weather- Signs of Warming- The Greenhouse Effect- Carbon Sequestration- Ice Ages- Island Earth- Landslides- Tales Told By Trees- Amphibian Alarm- Biodiversity- Coral Reefs- Ecosystem Services- Fire Dependent Ecosystems- Global Change in Mountain Ecosystems- Mass Extinctions- North America's Thawing Cap- Phytoplankton- A Changing World- Changes in the Chesapeake Bay- City Lights- Future Energy Supplies- Material World- The Human Footprint- The Return of the Wolf- World Population- Future Forest Fires- Mortenson Ranch- Native Ecology- Prairie Potholes- Precision Agriculture- Fresh Water- Greenland's Thinning Ice- Melting at Glacier National Park- On Thin Ice- Paradise Lost- Water, Water Everywhere?

Subscribe to RSS feed. Subscribe to iTunes podcast. Tales Told By Trees Earth's climate changes over time. Scientists can learn about ancient climates by studying tree rings. We examine what ancient Siberian trees tell scientists about the past. Learn More... Tales Told by Trees A Bit about Tree Rings Climatic Variation within Tree Rings External Links The Laboratory of Tree Ring Research The International Tree Ring Data Bank Tree Ring Home Page Landscape Changes in the Southwestern US

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