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Welcome to the web home for Field, Lab, Earth, the podcast from the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. The podcast all about past and present advances in agronomic, crop, soil, and environmental sciences, our show features timely interviews with our authors about research in these fields.

Field, Lab, Earth releases on the third Friday of each month in addition to the occasional bonus episode. If you enjoy our show, please be sure to tell your friends and rate and review. If you have a topic, author, or paper you would like featured or have other feedback, please contact us on Twitter @fieldlabearth or use the email icon below. You can join our newsletter to receive notifications about new episodes and related resources here.

Field, Lab, Earth features graduate and undergraduate students at the end of each episode. If you would like to be featured, please let us know by filling out this brief application form. Please note you must be a student member with ASA, CSSA, or SSSA to apply.

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Sep 30, 2022

“The Clean Water Act and Biosolids: A 45-Year Chronological Review of Biosolids Land Application Research in Colorado” with Dr. Jim Ippolito

Biosolids are the human waste products that are managed and produced by wastewater treatment plants. While many simply flush and forget their waste, biosolids can have a variety of advantageous environmental impacts when applied at proper rates and locations. In this episode, as part two of our miniseries on the Clean Water Act, Dr. Jim Ippolito discusses how researchers have utilized these benefits across various land types in Colorado.

Tune in to learn:

  • How biosolids can turn mining-affected dead spots into flourishing fishing getaways
  • How biosolids can create sustainable rangelands for cattle
  • Why Colorado has been such a hot spot for environmental quality research
  • How researchers tackled the time-bomb theory

If you would like more information about this topic, this episode’s paper is available here:

This paper is always freely available.

Contact us at or on Twitter @FieldLabEarth if you have comments, questions, or suggestions for show topics, and if you want more content like this don’t forget to subscribe. If you’d like to see old episodes or sign up for our newsletter, you can do so here:

If you would like to reach out to Jim, you can find him here:

If you would like to reach out to Leandro Vieira-Filho from our Student Spotlight, you can find him here:


CEU Quiz:


The Clean Water Act at 50—The Golden Anniversary of a Blue Policy: 

The Clean Water Act:

Field, Lab, Earth is Copyrighted by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.