A Walk in the Woods by Bill BrysonCosmos by Carl SaganSilent Spring by Rachel CarsonThe Rape of Nanking by Iris ChangThe Great Influenza by John M. Barry
Best Non-Fiction (no biographies)
6,222 books — 8,061 voters
Cosmos by Carl SaganThe Selfish Gene by Richard DawkinsGuns, Germs, and Steel by Jared DiamondThe Demon-Haunted World by Carl SaganThe Universe in a Nutshell by Stephen Hawking
Best Science Books - Non-Fiction Only
1,830 books — 3,587 voters

Into the Wild by Jon KrakauerThe World Without Us by Alan Weisman
Best Nature Books
1,151 books — 764 voters
Silent Spring by Rachel CarsonFour Fish by Paul   Greenberg
Waking Up to the Earth and Sky
213 books — 37 voters

Where the Wild Things Were by William Stolzenburg
Conservation and Animal Science
154 books — 54 voters
A Room of One’s Own by Virginia WoolfAn American Tragedy by Theodore DreiserMain Street by Sinclair LewisThe Great Gatsby by F. Scott Fitzgerald
Best Books of the Decade: 1920s
766 books — 1,133 voters

Your Inner Fish by Neil ShubinThe Book of Life by Stephen Jay GouldThe Selfish Gene by Richard DawkinsThe Panda's Thumb by Stephen Jay GouldDNA  by James D. Watson
Best Books on Evolution...
267 books — 216 voters

The Boy in the Striped Pajamas by John Boyne
Best WWII Fiction and Biography
696 books — 580 voters
A People’s History of the United States by Howard Zinn
Books That Everyone Should Read At Least Once
31,186 books — 117,800 voters

Cradle to Cradle by William McDonoughIn Defense of Food by Michael Pollan
Best Sustainability Nonfiction
398 books — 294 voters
What Is Life? by Lynn MargulisSilent Spring by Rachel Carson
Female Scientists
170 books — 105 voters

The Shape of Mercy by Susan Meissner
Best Christian Historical Fiction
1,583 books — 1,650 voters