- NYE
- A good time to drop the ball, familiarly?
- Comedian Louis
- The Science Guy
- Steve Allen's regular Louis
- Actress Carrie
- Bill __, The Science Guy
- TV's Science Guy
- Bill the science guy
- Bill who hosted a 2017 Netflix show
- Celebrity scientist who took a class with Sagan
- Bill who's a contemporary of Neil DeGrasse Tyson
- Bowtie-clad scientist Bill
- Bill ___ Saves the World
- Moment after which dieting plans begin in earnest, this time for real: Abbr.
- Bill who modeled his career after Mr. Wizard
- Scientist Bill whose best-known show aired for one hundred episodes
- PBS' "Science Guy"
- Science Guy Bill
- The Science Guy on TV
- 12/31, initially
- 12/31, initially, or what is blacked out in this puzzle
- Celebrity scientist Bill
- Night to make ludicrous promises, briefly
- Night for fireworks: Abbr.
- Day when people talk about dieting tomorrow, briefly
- Bill who said "science is the best idea humans have ever had"
- TV scientist in a bow tie
- American humorist
- Carrie or Louis
- Scientist Bill in a bow tie
- Comical Louis
- Nevada's largest county
- TV science guy
- Nevada county
- Comedic Louis
- Comic Louis
- 1920s-40s senator Gerald Prentice ___
- Bill ___ and Boomerang (1881 humor collection)
- 19th-century humorist Bill
- American humorist Bill
- Louis who often had Steve Allen in stitches
- TV scientist Bill
- Celebrity who aptly danced to "Weird Science" in his first "Dancing With the Stars" dance
- Popular day for parties: Abbr.
- Undeniable: Evolution and the Science of Creation author
- Costar of the Nat Geo talk show "StarTalk"
- One who "saves the world" in a Netflix show
- Big name in late '90s edutainment
- Notable astronomy student of Sagan at Cornell
- Bill ___, the Science Guy
- Steve Allen Show regular Louis
- Comic actor Louis
- The Steve Allen Show comedian Louis
- Science Guy of PBS
- PBS "Science Guy" Bill
- Carrie of "Creepshow"
- Carrie, Bill, or Louis
- Humorist Bill or Science Guy Bill
- TV's "Science Guy" Bill
- Bill of kidvid fame
- Humorist Louis
- Carrie ___ (Dick Cavett's wife)
- Near-sounding kidvid scientist
- TV science guy Bill
- Stand-up comedian Louis
- The Eyes of ___ (2005 PBS science show)
- Early TV comic Louis
- Emmy-winning scientist Bill
- Kidvid scientist Bill
- Bill ___, TV's Science Guy
- Dancing with the Stars contestant Bill
- Bill paid for TV
- Bowtie-wearing Bill
- When dropping the ball is celebrated: Abbr.
- The Eyes of __: 2005 PBS science show
- 1950s-'60s "Man on the Street" comic
- Comic with Poston and Knotts on "The Steve Allen Show"
- Emmy-winning scientist
- 1950s-'60s "Man on the Street" comic Louis
- PBS's science guy
- Science educator Bill
- TV educator Bill in a lab coat
- Actress Carrie who was married to Dick Cavett
- TV scientist with 19 Emmys
- Scientist with 19 Emmys
- Bill __ Saves the World: science talk show
- TV scientist whose show has won 19 Emmys
- Bill __ the Science Guy: '90s TV show
- Bill promoting science?
- Lab-coated TV educator
- Dec. 31
- Night anticipating the Ball Drop, informally
- Steve Allen pal Louis
- Bill for education?
- Emmy-winning TV scientist Bill
- Louis ___ of The Steve Allen Show
- Louis or Carrie
- Louis of The Steve Allen Show
- '50s "Tonight Show" regular
- Kidvid scientist
- Steve Allen Show regular
- Bill or Louis of TV
- 2017 "world-saving" Netflix host
- High-energy TV scientist
- Netflix's "Saves the World" scientist
- Science rules! speaker
- Science Guy of TV
- PBS science expert
- Great Big Book of Tiny Germs author
- Science expert seen on ". . . Millionaire"
- Blogger on planetary.org
- Barometer in a Bottle home-demo offerer
- Scientist on "Dancing with the Stars"
- Scientist with a ballet-shoe patent
- TV science educator
- Netflix science series star
- Netflix series scientist
- Scientist often on Tyson's "StarTalk"
- Saves the World guy on Netflix
- Netflix science show host
- Science rules! host
- TV host in a lab coat
- Great Big World of Science author
- Saves the World scientist
- 12/31, for short
- TV science explainer
- Big Blast Of Science author
- TV guy who "Saves the World"
- Big Board letters
- Nevada county in which part of Death Valley National Park is located
- Former Senator, North Dakota.
- Bill ___, humorist.
- Bill ___, punning humorist (1850–1895).
- Brood of pheasants.
- Former isolationist Senator.
- Aneurin Bevan's nickname.
- Bevan's nickname.
- Mr. Bevan.
- Nickname for Aneurin Bevan.
- Nickname for Britain's battling Welshman.
- Humorist of the 1880's.
- Mr. Bevan to his friends.
- Britain's Bevan.
- Aneurin.
- Bill ___, American humorist.
- American humorist (1850–96).
- Bevan.
- Humorist Bill ___.
- See 3 Down.
- Humorist Bill.
- Former Labor leader Bevan.
- Aneurin Bevan.
- U. S. humorist
- Louis or Bill
- Group of pheasants, in England
- Bill ___ and Boomerang
- Flock of pheasants
- Group of pheasants
- Comic Louis ___
- Isolationist in the Senate: 1925–45
- U.S. humorist: 1850–96
- Actor-comedian Louis
- Humorist who wrote "Baled Hay"
- Actor Louis
- Humorist who sounds close
- Gordon Hathaway portrayer on TV
- Aneurin Bevan, familiarly
- Actress Carrie ___
- Comedian Louis ___
- Steve Allen Show veteran
- Carrie married to Cavett
- Comic author Bill
- Laugh maker Louis
- TV comic Louis
- Historian Russel ____
- Pulitzer author Russel
- Old TV comedian Louis
- The Steve Allen Show regular
- Old-time humorist Bill
- Baled Hay humorist
- 1920's-40's North Dakota senator Gerald
- Largest county of Nevada
- The Eyes of ___ (public TV science show)
- Frequent ad-libber on "The Steve Allen Show"
- 12/31
- Time for a countdown: Abbr.
- Scientist with multiple Emmys
- Nevada county containing Yucca Mountain
- Bill in a bow tie
- Science advocate with a bow tie
- Big name in antiscience debunking
- Largest county in Nevada
- Science advocate Bill
- Former PBS host with a bow tie
- Host of the web series "Emoji Science"
- Nevada county with part of Death Valley National Monument
- Bill who popularizes science
- Bill who's a science expert
- C.E.O. of the Planetary Society starting in 2010
- December 31: Abbr.
- 12/31, briefly
- Bill of the Planetary Society
- Countdown time, for short
- Netflix's "Bill ___ Saves the World"
- Nevada's largest county by area
- Day when the ball drops: Abbr.
- Dec. 31 celebration
- December 31, in brief
- Bill known as the "Science Guy"
- Celebration six days after Xmas
- December 31, for short
- Bill advocating for science
- Bill concerned with science communication
- Bill of science
- It ends when 1/1 begins
- Bill supporting public television
- Occasion for fireworks: Abbr.
- Time to drop the ball, in brief
- Kids' TV host actually surnamed Rowe
- Man on the Street man
- Tonopah's county
- Carrie in "Creepshow"
- The Steve Allen Show regular Louis
- December 31st, for short
- Scientist who guest-starred twice on "The Big Bang Theory"
- Bill who got his television start on the sketch show "Almost Live!"
- Annual conclusion, in a way: Abbr.
- Bill _____, the Science Guy
- He's the science guy
- Bill dubbed the "Science Guy"
- Times Square countdown time, briefly
- December 31, briefly
- 12/31: Abbr.
- Occasion to stay up until midnight: Abbr.
- Ball-dropping occasion, briefly
- Annual occasion to pop champagne, for short
- Times Square ball drop day, for short
- Science education advocate Bill
- Former Tonight Show regular
- Funny Louis
- Bill or Carrie
- Entertainer Louis
- The Science Guy on PBS
- 19th C. humorist Bill
- County in Nevada
- Bill ___ Saves the World (Netflix series)
- Bill who sells "Science Is Universal" T-shirts
- Comedian Louis of early TV
- Times Square ball drop time (Abbr.)
- Bill of educational shows
- Bill, TV's "Science Guy"
- Initialism found in 17-, 29-, 45- and 59-Across
- Poet Naomi Shihab ___
- Day for a ball drop (Abbr.)
- Day before Jan. 1, for short
- Holiday where the last word spoken is usually "one," for short
- 12/31 holiday, for short
- Dec. 31, for short
- Nevada county whose seat is Tonopah
- The End Is ___ (Peacock TV show promoted by Syfy)
- The End Is ___ (apocalyptic-sounding show starring science educator Bill)
- Bill sporting a lab coat on TV
- Astronomy student of Sagan's at Cornell
- Bill ____, TV's "Science Guy"
- TV'S "Bill ___ the Science Guy"
- Bill of educational TV
- Soft Power author Joseph
- Bill often seen in a lab coat and bow tie
- Bill of science shows
- Science pundit Bill
- Undeniable: Evolution and the Science of Creation author Bill
- Science promoter Bill
- Bill concerned with science education
- Bill of scientific information
- Science whiz Bill
- Bill with a bow tie
- Sciencey Bill
- The Planetary Society CEO Bill
- Bill concerned with science
- Science expounder Bill
