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Citizen Science: Share Your Observations

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By contributing their observations of the natural world, citizen scientists can participate actively in environmental conservation.Photo: Contribute your Baltimore Oriole observations to eBird, a large citizen science database. AcrylicArtist/morgueFile.

Other Biodiversity Topics
Environmental Issues Spotlight10

Water Quality: The Best Beach States in the U.S.

Find out which states have the cleanest beaches.

Water Quality: The Worst Beach States in the U.S.

Find out which states have the beaches with the worst water quality.

Carbon Dioxide Emissions: The 9 Best States

Find out which states have the lowest carbon dioxide emissions.

Top 14 Carbon-Emitting States

Find out which states are responsible for most of the United States carbon dioxide emissions.

What is the Northern Gateway Pipeline and Why Does It Worry So Many?

A controversial pipeline was approved by the Canadian government to transport crude oil from Alberta to the Pacific Coast. Find out why many groups are against this project

How Can We Improve Habitat Connectivity?

Habitat fragmentation can have profound negative impacts on wildlife populations. To counter those effects, various approaches can be used to enhance connectivity between habitat patches.

Abundant Deer Hurt Bird Populations

Learn more about abundant deer mean damage to forest vegetation, affecting songbird populations.

7 Points to Explain the EPA’s Clean Power Plan

Find out what the Clean Power Plan is, how it works, and how it will help the White House fulfill its climate change commitment.

The 15 Most Resilient Cities

The resilience of the world's cities was estimated and compared by assessing vulnerabilities and the ability to bounce back from disasters.

Global Warming: The 9 Most Vulnerable Cities

These 9 cities are at the most risk of damage associated with flooding and sea level rise from climate change.

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