Skepticism

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Stephen Fry

British Actor, Writer, Lord of Dance, Prince of Swimwear & Blogger
4,350,656 followers |

Penn Jillette

More than 1/2 (by weight) of Penn & Teller at the Rio in Vegas, Penn's Sunday School Podcast, P&T Tell a Lie on Discovery, P&T: Fool Us! on ITV.God, No! - book
1,791,791 followers |

Adam Savage

I play a scientist on TV. Obsessive maker of things. Host of Mythbusters on the Discovery Channel.
671,427 followers |

Tim Minchin

I'm a musician with a swollen sense of my ability to articulate my insignificance.
401,037 followers |

Teller

283,908 followers |

The QI Elves

Quite Interesting nuggets, posted as frequently as Mr Fry's strict homework schedule allows.
260,322 followers |

ben goldacre

Nerd cheerleader, Bad Science person, stats geek, research fellow in epidemiology, procrastinator. TED here: http://bit.ly/qUcrmf And email: ben@badscience.net
194,172 followers |

Phil Plait

Astronomer, author, skeptic, father, punster.
178,831 followers |

PZ Myers

Godless liberal biologist
103,970 followers |

Simon Singh

33,940 followers |

David Allen Green

Journalist and lawyer. Legal correspondent of @NewStatesman; blogger at @TheLawyerMag; and writer of Jack of Kent blog. A liberal and a skeptic.
27,583 followers |

Rebecca Watson

Fearless leader of Skepchick.org, podcaster for SGU & IPN, writer, ice cream enthusiast
23,679 followers |

Rebecca Skloot

Author of NYTimes Bestselling book THE IMMORTAL LIFE OF HENRIETTA LACKS (aka #HeLa), soon an Oprah/Alan Ball/HBO film. Writes for NYTMag, O Mag. Animal person.
23,539 followers |

Randi Foundation

The James Randi Educational Foundation is an international nonprofit that works to combat unreason and to promote critical thinking in society.
16,073 followers |

Kev

Web developer, dad to 3. Lackey of @lilandtedsmum. Autism and Manic Depression advocate
14,476 followers |

drval

MD founder of Better Health, LLC: a network of 130 medical bloggers, partnered with the CDC, ACP, Harvard Health Pubs & more. Smart health commentary.
10,081 followers |

Martin Robbins

Writer and talker covering science, pseudoscience and evidence-based politics at The Guardian, Strange Quarks, and anywhere else that'll have me.
10,050 followers |

Jennifer McCreight

I'm a liberal, geeky, nerdy, scientific, perverted atheist feminist formerly trapped in the Midwest
7,453 followers |

Tom Chivers

Telegraph journalist and science nerd; blogger; purveyor of Leftist propaganda. All tweets are opinions of Hertz Rentacar
6,976 followers |

DJGrothe

skeptic, For Good Reason host, mind-reader, author and editor, consumer of culture, president of James Randi Educational Foundation, etc.
6,686 followers |

Dr Rachael Dunlop

DrRachie from the Skeptic Zone. ALS and ageing researcher. Podcaster, blogger, science communicator. Winner of the 2010 Shorty Award for health.
6,340 followers |

Edzard Ernst

CAM researcher, co-author of 'Trick or Treatment: alternative medicine on trial'; apparently i called Prince Charles a snake-oil salesman
5,672 followers |

Andy Lewis

The 80th most important twitterer in the Universe. Well, joint-80th with Jemima Khan.
5,538 followers |

Richard Saunders

Skeptical Judge on TV's THE ONE - Producer of The Skeptic Zone Podcast www.skepticzone.tv - Life Member ASI www.skeptics.com.au - CSI Fellow www.csicop.org
5,499 followers |

Tim Farley

Research Fellow for @JREF. Software guy & skeptic who created http://whatstheharm.net. Fan of science, space, jazz, blues, beer & good comedy.
5,184 followers |

Richard Wilson

Writer, sceptic and shark-jumper. Author of Titanic Express and Don't Get Fooled Again.
4,813 followers |

Dorothy Bishop

Professor of developmental neuropsychology. Blog on http://deevybee.blogspot.com/
4,739 followers |

Liz Ditz

Dyslexia consultant, autism advocate, and blogger. @k_5remediation for dyslexia; see http://thinkingautismguide.blogspot.com/ for autism advocacy.
4,588 followers |

Secular Coalition

The national lobby for atheists, humanists, agnostics, freethinkers and other secular Americans.
4,391 followers |

David Colquhoun

Pharmacologist and blogger. Likes stochastic processes, dislikes managerialism and quacks.
4,294 followers |

Shannon Rosa

I kick ass. Sometimes my own. Writer, geographile, geek, autism parenting & iPad advocate, cheerful grump. Senior Editor, Thinking Person's Guide to Autism.
4,096 followers |

Neil Denny

Tweets by Neil Denny of the Little Atoms Radio Show. Podcasts: http://feeds2.feedburner.com/littleatomspodcast & http://feeds.feedburner.com/littleatomsroadtrip
3,383 followers |

Dean Burnett

Neuroscienceist, Comedian, Writer, Lecturer, Tutor, Husband, Father, Balding (Not in that order)
3,245 followers |

Dr. Isis

Dr. Isis is a physiologist and science blogger. She writes about being a woman in academia, science, and shoes.
3,215 followers |

Orac

Orac is a (not so) humble pseudonymous surgeon/scientist with an ego just big enough to delude himself that someone might actually care about his miscellaneous
3,066 followers |

Crispian Jago

failed bassist, ex hippy, science and music loving godless Cornish git
3,007 followers |

Michael Specter

I am a staff writer at The New Yorker and the author of the book Denialism.
2,956 followers |

Emily Willingham

Science writer: Slate, Grist, SciAmBlogs, The Scientist, Backpacker, others. Science editor @ http://thinkingautismguide.blogspot.com/
2,838 followers |

Dave The :-) Singer

A thirsty pedetacious unicorn with perfect breasts.
2,708 followers |

Scott Gavura

Advocate for science-based healthcare; pseudoscience critic; tweet on medicine/pharmacy/health; Contributor to sciencebasedmedicine.org. RTs are not...etc.
2,618 followers |

Merseyside Skeptics

The Merseyside Skeptics Society is a non-profit organisation dedicated to developing and supporting the sceptical community on Merseyside
2,536 followers |

The Gimpy Blog

Massive progressive.
2,513 followers |

Abel Pharmboy

Natural products pharmacologist & professor, science writer, musician, Yankee in the South, Coloradan, Floridian. The original - accept no substitutes.
2,441 followers |

Jason Brown

Atheist, Skeptic, Ukulele Player, Blogger, Troublemaker. Thorn in the side of @tinydalek. Creator: @theskepticator, @AthiestBot. 'social' 'media' 'expert'
2,409 followers |

Brian Gregory

Hopeless geek and technologist, skeptic, atheist, @VirtualDS organizer, science/space buff, fan of bacon, Dr Who, Orioles, and Charm City! Spaaaaace Robots!
2,345 followers |

SeandBlogonaut

Writer, Reviewer, Booklover and Secular Humanist you can catch me at the blog below.
2,143 followers |

Ash Donaldson

Nullius in verba. Words to live by for a Human Factors/User Experience geek like Ash Donaldson.
2,121 followers |

Drug Monkey

2,071 followers |

Elyse Anders

It's mostly about poo... and sometimes activism. Usually drunk. I'm also this lady, believe it or not: hugmeimvaccinated.org
2,053 followers |

PalMD

Internist and medical writer/blogger. Tweets guaranteed to be franker and snarkier than my other writing.
1,862 followers |

Grassroots Skeptics

Helping skeptics groups share resources. Use the link above for more info.
1,754 followers |

Simon Perry

I argue with quacks and pseudo-economists. I tweet in a professional capacity, if sued for libel my legal fees can therefore be deducted from pre-tax profits.
1,726 followers |

AgeOfAutistics

If society gives Autistiscs due respect, this could be the first Age of Autistics
1,644 followers |

Corina Lynn Becker

autistic & ADHD webcomic artist & fantasy writer. Disability Studies student, Neurodiversity activist, feel free to ask me stuff! My comics: www.nekomics.com
1,516 followers |

Blue Wode

Editor of an anti-quackery website.
1,468 followers |

Dr Aust

Grumpy middle-aged scientist & Univ teacher exasperated by fashionable nonsense, own spreading waistline & hair loss etc. All tweets in personal capacity.
1,329 followers |

paganmama

Devoted amateur. My flesh has turned to fur.
1,327 followers |

Quackery Watchdog

We're here to watch out for Quackery - and certify it!
1,319 followers |

David Gorski

A surgical oncologist fighting for science-based medicine over woo.
1,189 followers |

Olivia Lovag

Loves cats, animals, music, cinema, photography, atheism, science, gadgets, politics..stuff!
1,147 followers |

Byorgen Druffeldroff

#NoPants advocate, SysAdmin, Skeptic and Atheist from Sydney.
1,072 followers |

Alan Henness

1,044 followers |

@jdc325

Another idiot with a keyboard: I write about alt-med, media reporting and legal chill (among other things).
1,016 followers |

Joe Albietz

Pediatric intensive care physician, father, geek, advocate of critical thinking and science-based medicine, Secret Agent of author Scott Sigler.
1,008 followers |

Derek Bartholomaus

TV Post Guy, Part-Time Political Blogger, Skeptic, and creator of the Jenny McCarthy Body Count
988 followers |

Peter Bowditch

Skeptic, atheist, podcaster, writer and general all-round polymath.
942 followers |

Naomi

Skeptic, engineer, mom, knitter. In the energy business.
915 followers |

MedTek

Full time Database Whisperer and space enthusiast, part time woo fighter, sometimes musician, managing fretless guitar wizard Ned Evett.
844 followers |

Ljiljana

I came to Casablanca for the waters.
841 followers |

Reasonable Hank

Atheist, Skeptic. That makes sense, Alf
830 followers |

Sara Rosinsky

Advertising copywriter, lover of science and skepticism, fan of progress, player of racquetball.
783 followers |

Amy Tuteur

Dr. Amy Tuteur is an obstetrician gynecologist. She blogs about sex, science and society, often all three at once.
772 followers |

Melanie Byng

skeptic, rationalist, humanist, satirical...
758 followers |

JoeAnderson

Airline Pilot, System/Software Architect, Skeptic, guitar player
741 followers |

Science& Freethought

Promoting science,atheism and freethought in India and South Asia. Nirmukta is a Sanskrit word that means “Freed”; “Liberated”.
679 followers |

Kim Wombles

676 followers |

Holford Watch

Concerned about the evidence base for nutritional interventions
636 followers |

AJG

Those people who class me as a ‘grumpy old man’ may be closer to the truth than I’m willing to admit !
622 followers |

Skepticat

Just another so-called skeptic.
612 followers |

Mike Smith

Skeptic; science-lover; humanist.
538 followers |

Jessi Slaughter

calling out quacks, vexatious litigants.
514 followers |

digitaltoast

514 followers |

She Thought

Women. Thinking critically.
467 followers |

Tom Lewis

Writer, editor, husband, dad to 3, music lover, cooks-n-eats, reads, hikes, blah blah
419 followers |

mainstream parenting

407 followers |

Kristin C

Lo-fi sci-comm, astronomer, nerd, procrastinator. Skeptical activist (skeptivist) since 2009. [also the anglophone incarnation of @prokrastinuft]
392 followers |

Greg Fish

writer, techie, computer lobotomist
386 followers |

Peter

ex bass player for 'the Masochists', skeptic, atheist Electronics nut, history buff
386 followers |

Catherina+ScienceMom

364 followers |

William Cobbett

Recovering pamphleteer, now tweeter.
318 followers |

Erik Davis

Toronto technology & media professional. I write on skepticism & critical thinking at @SkepticNorth and pen kibbles of wisdom for @DBagChopra.
286 followers |

Matt Lowry

I am a physics teacher & self-described skeptic, someone who believes in Carl Sagan’s adage that “extraordinary claims require extraordinary evidence.”
266 followers |

RationalMoms

Rational moms of the world unite!
261 followers |

David K. March

Male, 45-ish, agnostic/skeptic, 'aspie,' independent progressive, volunteer & HR activist. Blog now reopened, but still under re-, um, DE-construction.
250 followers |

Tammy

Hi.I'm Mom to my 6 yr old with Autism. I'm interested in Science, Gaming, Skepticism, Non-Woo & Pseudoscience, Scifi/Anime, I'm Secular and a Happy Atheist
250 followers |

Coran Stow

I'm just this guy, you know.
234 followers |

Christian Weihs

Skeptic landscape gardener, from ZZ9 Plural Z Alpha, ancient geek, armed with a Mac and a Nikon DSLR
228 followers |

Primum Non Nocere

225 followers |

Kathleen Seidel

Librarian, researcher, writer, opinionista
170 followers |

Peter Trzeciak

OpenSource, Web 2.0 and Social Media developer: Joomla, CSS, MySQL, PHP, Amateur photographer, and all out skeptic.
161 followers |

mike stanton

Teacher, author, autism activist.
155 followers |

Danny Moules MQuack

Liberal & opinionated hacker. I opine (liberally) and hack. Currently being highly fashionable, according to a definition of fashionable very much my own.
112 followers |

Jack of Kent Blog

A Twitter blogpost alert.
103 followers |

Erik

Geek Skeptic Musician Husband
101 followers |

SkeptVet

Skeptical Veterinarian
87 followers |

Rebecca Fisher

86 followers |

Tyson W

55 followers |

Merda Taurorum

Skeptic, expat, blogging, mother of one .... who homeschools out of desperation rather than choice.
29 followers |

Brianna Gamma

12 followers |

Dawkin

Thoughtful me.
3 followers |

Curated by Squillo
Submitted by RayBeckerman

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