| 100% | MEGAWATTS | 9 | 2001 book about the nuclear world, __ and Megatons |
| 44% | COLD | 4 | The ___ and the Dark: The World after Nuclear War," 1984 book co-authored by Carl Sagan, Paul R. Ehrlich and others |
| 37% | HONEY | 5 | "More than ___," 2012 documentary film about the world's declining bee population and its ecological effects |
| 37% | HEAL | 4 | "___ the World," 1991 song by Michael Jackson about peace and saving the Earth |
| 37% | TANEHISI | 8 | "Between the World and Me" National Book Award winner Coates |
| 37% | OFICEANDMEN | 11 | Book about the National Hockey League? |
| 37% | CANADIANA | 9 | Books about the Mounties, e.g. |
| 36% | PROSEANDKHANS | 13 | Book about the writing style of the Mongols? |
| 36% | WEBB | 4 | World Golf Hall of Famer Karrie who won the 2000 and 2001 U.S. Women's Open |
| 35% | MOBYDICK | 8 | Herman Melville's book about the Pequod |
| 35% | VELVETEEN | 9 | Beloved toy in books about The __ Rabbit |
| 35% | FINDINGWINNIE | 13 | Children's book about the bear that inspired A.A. Milne by Lindsay Mattick and Sophie Blackall that won the 2016 Caldecott Medal (2 wds.) |
| 35% | UNIVERSEIN | 10 | "The ___ a Nutshell," 2001 book about theoretical physics by Stephen Hawking: 2 wds. |
| 34% | ANIGHTTOREMEMBER | 16 | 1955 Walter Lord book about the 63-Across |
| 34% | COSMOS | 6 | Popular 1980 Carl Sagan book about the universe |
| 34% | ASEPARATEPACE | 13 | John Knowles book about the tortoise's winning strategy? |
| 34% | FEAR | 4 | 2018 Bob Woodward book about the Trump White House |
| 33% | WHOWONTHEWAR | 12 | Final book in Phyllis Reynolds Naylor's series about two feuding families, the Hartfords and the Malloys (4 wds.) |
| 33% | MAIN | 4 | "Exile on ___ St." (Robert Greenfield book about the Rolling Stones) |
| 33% | JONATHANFRANZEN | 15 | Author of a 2001 novel about the Lambert family and a 2010 novel about the Berglund family |
| 33% | BEES | 4 | Learn about the birds and the ___ |
| 33% | ATLAS | 5 | Book of the world |
| 33% | HEMISPHERIC | 11 | About half the world |
| 33% | ALONE | 5 | "Bowling ___," seminal social science book about the decline of civic engagement |
| 33% | WONTSTOP | 8 | Can't Stop __, 2005 book about the rise of hip-hop |
| 33% | KINSHASA | 8 | Capital about 22 miles from Brazzaville, making them the second-closest pair of world capitals (behind Vatican City and Rome) |
| 32% | NAIVE | 5 | Innocent about the deceptions of the world |
| 32% | TAPOUT | 6 | Reality show about the martial arts world |
| 32% | BORNFREE | 8 | Joy Adamson book about Elsa the lioness |
| 32% | THELORAX | 8 | Dr. Seuss book about saving the environment |