Episode #08076

Actor Mark Ruffalo became an anti-fracking, clean water activist after seeing the technologies' detrimental impact on communities in Pennsylvania. (07:20)

Tags:  Mark Ruffalo,  interviews,  fracking,  pollution,  water,  energy,  accept your apology,  alternative energy,  North Dakota,  environment,  movies,  nailed,  oil,  Germany,  Pennsylvania,  Incredible Hulk,  housing,  America,  elitism,  advertising,  protests,  science

Episode #08001

Stephen says goodnight and takes a swig from his environmentally friendly water bottle. (00:07)

Tags:  sign off,  environment,  water

Episode #07122

For every face Colbert Nation uploads to the Stephen & Melinda Gates Foundation website, DonorsChoose.org will receive $5 from the Bill & Melinda Gates Foundation. (03:18)

Tags:  Melinda Gates,  Bill & Melinda Gates Foundation,  Stephen & Melinda Gates Foundation,  Bill Gates,  charity,  DonorsChoose.org,  Colbert Nation,  fundraising,  water,  high-fructose corn syrup,  Internet,  kids,  Radiohead,  Thom Yorke,  Rocktember with Radiohead,  Dr Pepper,  business,  advertising,  wealth,  American Idol,  mental health,  health,  Clay Aiken,  sex,  education,  Heroe$ Crawl

Episode #06159

Stephen refuses to exploit his 1.9 million Twitter followers to plug Water.org for Matt Damon and receives the first-ever Golden Tweet Award from Biz Stone. (03:45)

Tags:  Biz Stone,  appearances,  Twitter,  Internet,  Matt Damon,  mail/e-mail,  celebrities,  movies,  charity,  give it to me,  Jimmy,  water,  I Did It!,  Stephen's laptop

Episode #05132

Sylvia Earle stresses the importance of doing everything we can to protect the ocean and restore health to the system that takes care of us. (05:47)

Tags:  Sylvia Earle,  interviews,  books,  oceans,  environment,  food,  fishing,  animals,  water

Episode #05090

Nicholas Kristof describes the endocrine disruptors in the water that are causing genital malformations in male animals and humans. (05:44)

Tags:  Nicholas Kristof,  interviews,  pollution,  animals,  penises,  balls,  men/women,  EPA,  water,  environment

Episode #05045

NASA, don't make Stephen launch an intern into space with a can of spray paint. (03:28)

Tags:  Space Module: Colbert,  NASA,  space,  Chaka Fattah,  Gabrielle Giffords,  interns,  challenges,  poop & pee,  water

Episode #

Highlights from the world of Stephen and his guests include an announcement about the Pennsylvania primary and a celebration of World Water Day. (04:37)

Tags:  Indecision 2008,  Barack Obama,  Dee Dee Myers,  Richard Branson,  museums,  water,  Dean Kamen,  Carole King,  Hillary Clinton,  Weekly Recap

Episode #04039

Stephen dedicates the whole show to water and pledges not to drink a single drop. (3:09)

Tags:  Watershift Down,  water,  shortages,  Richard Branson,  Doritos,  environment,  waterboarding,  dogs

Episode #04039

Thirst locally and drink globally with Stephen's new line of bottled water, Aqua Colbert. (2:34)

Tags:  Watershift Down,  water,  Aqua Colbert,  international affairs,  environment,  Bangkok,  the Arctic

Episode #04039

Stephen visits the American Museum of Natural History to learn more about the power of water. (6:10)

Tags:  Watershift Down,  water,  museums,  history,  Melanie Stiassny,  environment,  on location

Episode #04039

Stephen puts inventor Dean Kamen's vapor compression distiller to the test. (6:13)

Tags:  interviews,  Dean Kamen,  Watershift Down,  water,  shortages,  technology,  Doritos,  Expert

Episode #04039

Stephen thinks it's great that someone has finally found a use for water. (1:02)

Tags:  Watershift Down,  water,  Aqua Colbert,  sign off,  fireside

Episode #03134

Stephen asks Anderson Cooper how people can help the environment without any inconvenience. (5:34)

Tags:  Anderson Cooper,  appearances,  environment,  global warming,  South Carolina,  animals,  Wilford Brimley,  celebrities,  media,  reenactments,  shortages,  water,  Alaska,  Address the Mess,  under the desk,  endangered,  the Amazon,  oceans