2020                   July 8, The six-year-old space agency with hopes for Mars: On this week’s podcast, an ambitious Mars mission from a young space agency, and how crumbling up rocks could help fight climate change, Nature Podcast, https://www.nature.com/articles/d41586-020-02056-3, Host: Benjamin Thompson, Shamini Bundell & Nick Howe

2018                   May 23, Biochar for carbon sequestration, Jefferson Exchange Radio Show, NPR, OR, http://ijpr.org/post/ins-and-outs-and-undergrounds-biochar, Host: Geoffrey Riley.

2016                   Soils and Climate Change. UNFCCC Podcast, Marrakech, Morocco.

2016                   May 2, WHCU, TECH MINUTE: Improvements in farming could fight climate change, Host: Kyle Robertson, http://whcuradio.com/news/025520-tech-minute-farming-climate-change/

2016                   February (Ithaca, the Tompkins Public Library, broadcast)

2015                   December 17, Bringing Paris Climate Talks to CNY: Local Actions, Viewpoints on Climate Change, WAER, Host: Chris Bolt, http://waer.org/post/bringing-paris-climate-talks-cny-local-actions-viewpoints-climate-change

2014                   December 8, Mitigating climate change with soil conservation practices, CornellCast, http://www.cornell.edu/video/johannes-lehmann-where-soil-fits-into-climate-change-mitigation-strategy

2014                   November 20, BioChar’s role in raising the organic matter, Program Vermont Green Zine, Royalton Community Radio, Vermont, Host: Henry Swayze

2012                   March 13, “Big Energy Ideas”, Talk of Alaska, APRN www.alaskapublic.org, Host: Steve Heimel

2011                   December, “Terra Preta and Biochar”, KVMR’s Native American program, Host: Alan Stahler

2011                   May 11, “Johannes Lehmann finds key to new energy, soil fertility in biochar”, http://www.cornell.edu/video/johannes-lehmann-finds-key-to-new-energy-soil-fertility-in-biochar

2011                   February 24, “Biochar: a product of the future”, The United States Studies Centre, University of Sydney, Australia, http://ussc.edu.au/news-room/Biochar-a-product-of-the-future

2010                   December 2, Report from Cancun, WHCU, Host: Doug Scott, http://www.pressoffice.cornell.edu/inthenews/?y=2010

2010                   October 24, “Biochar and Climate Change”, WVBR Sunday Forum (http://wvbr.com/sundayforum), Host: Tommy Bruce

2010                   April 21, “Biochar”, Farm Talk, Radio Fargo, North Dakota

2010                   February 10 onwards, “Johannes Lehmann on turning waste into a natural resource”, Earth and Sky, National Public Radio NPR, http://www.earthsky.org/interviewpost/agriculture/johannes-lehmann-on-turning-waste-into-a-natural-resource, Lindsay Patterson

2010                   January 22, “Charcoal for Climate Change?” PRI’s The World Science, National Public Radio NPR, British Broadcasting Corporation BBC, http://www.world-science.org/podcast/tackling-the-global-organ-shortage-slime-molds-and-solar-eclipse/, Elsa Youngsteadt

2009                   May 24, Char Grilled, Australian Broadcasting Corporation ABC, Landline Program, http://www.abc.net.au/landline/content/2008/s2579264.htm, Anne Kruger

2009                   January 29, and ongoing, BBC World Service Radio, “Soils”, One Planet Program, http://www.bbc.co.uk/worldservice/programmes/one_planet.shtml, Richard Hollingham and Simon Watts

2008                   May 31, Biochar – Black is the new Green, Qirks&Quarks, Canadian Science Radio Show, CBC, Canada, http://www.cbc.ca/quirks/archives/07-08/may31.html#4, Bob McDonald

2008                   February 7, Biochar (30 minutes), Beyond Zero, Melbourne, Australia, Matthew Wright

2007                   August 23, Agrichar – A solution to global warming?, Catalyst, Australian Broadcasting Corporation ABC, http://www.abc.net.au/catalyst/stories/s2012892.htm, Mark Horstman

2006                   February, The Inoculated Mind, Berkeley Radio, Terra Preta, http://www.inoculatedmind.com, Karl Mogel

2006                   February 18, Science Update, Radio Program, Terra Preta, http://www.aaas.org/news/releases/2006/0218amazon.shtml, Bob Hirshaw

2005                   February 23, Peter Adler Film “Terra Preta – Das schwarze Gold des Amazonas”, featured in Arte in France and Germany, Peter Adler

2004                   January 6, BBC-Brazil Internet Interview Publication “Cientistas tentam recriar no Pará ‘solo indígena que pode combater fome’”, featured in http://www.bbc.co.uk/portuguese/ciencia/story/2004/01/040106_terrapretaml.shtml, Isabel Murray

2002                   December 9, BBC Film Production on “The Secret of Eldorado”, featured in BBC 2 (50 minutes), David Sington

1997                   June, Radio Interview “Greening the Desert – Runoff Irrigation and the Potential for Developing Countries” featured in Radio Berlin