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A compendium of science-based information

Climate Change in Cities: Observations, Impacts, and Solutions

Responses of Communities and Ecosystems to Global Changes

Bark beetle outbreaks may influence forest fire risk

The Challenge of Understanding, Monitoring, and Managing the Health of Our Planet

The US federal government has ruled that CO2 is a pollutant

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Fewer Tornado Days, But More Big Outbreaks While there are fewer days each year with tornadoes, on average, the number of days with more than 30 tornadoes is increasing.

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