| Aaron Lake Smith | 6 | Bill McKibben and Muhammed Nasheed Speak at "Suicide Pact or Survival Pact?" |
| Abby Ellin | 1 | A Rolling Stone Gathers Moss |
| Adam Hinterthuer | 2 | A Great Lakes Adventure: Managing Water Levels (Dammed If You Do) |
| Alan Kesselheim | 2 | Recipe: Tried and True Dried Fruit Snacks |
| Alexa Schirtzinger | 15 | The Green Side of $700 Billion |
| Alisa Opar | 402 | Giveaway: Win a Copy of a Gorgeous New Nature Photography Book |
| Alison Hawkes | 7 | The Mayor's Birds |
| Alun Anderson | 5 | Saving South Georgia’s wildlife |
| Amber Williams | 25 | Hope Diamonds: The Jewelry Industry Isn't Known for Being Environmentally Friendly, But There Are Some Exceptions |
| Anna Sanders | 6 | Family Captures Albino Hummingbird in Stunning Photographs |
| Art Wolfe | 8 | India: Tiger |
| Boyd Norton | 1 | How Cold Is Cold? |
| Bruce Reid | 1 | BP oil may have added to uncertain future of Mississippi River shrimp |
| Daisy Yuhas | 31 | Mild Winter Forces Operation Migration To End Season in Alabama |
| David J. Ringer | 12 | Christmas Bird Counting on Grand Isle, Louisiana |
| David Seideman | 7 | Les Line, Legendary Audubon Editor, Dies |
| David Yarnold | 2 | Birding the Net: A New Way to Experience Birds |
| Deirdre Gill | 4 | Give to Be Green |
| Dyana Z. Furmansky | 10 | Unpacking Rosalie Edge, Slowly: Stories 'Hawk of Mercy' Doesn't Tell Part 10 |
| Editor | 20 | Write a Caption for this Photo: Short-Tailed Albatross |
| Emily Achenbaum Harris | 1 | A 'lush' natural deodorizer |
| Frances Backhouse | 1 | An Extinct Woodpecker Flies Back Into View |
| Frank Graham | 22 | History Bytes: TR at Yellowstone |
| Graham Chisholm | 1 | Seeking the Spoon-billed Sandpiper in Myanmar |
| Greg Butcher | 8 | Christmas Bird Counting in Mindo, Ecuador |
