Jay Lehr died on January 10, 2023.

Jay Lehr, Ph.D., was a Senior Policy Analyst at the International Climate Science Coalition, an internationally renowned speaker, scientist, author, and Policy Advisor to The Heartland Institute, where he served as Science Director for 26 years.

Lehr testified before Congress on dozens of occasions on environmental issues and consulted with nearly every agency of the national government, as well as many foreign countries.

Lehr was a leading authority on groundwater hydrology. After graduating from Princeton University at the age of 20 with a degree in Geological Engineering, he went on to receive the nation’s first Ph.D. in Groundwater Hydrology from the University of Arizona. He later became executive director of the National Association of Groundwater Scientists and Engineers.

Lehr was the author of more than 1,000 magazine and journal articles and 36 books. He is editor of Rational Readings on Environmental Concerns, McGraw-Hill’s Handbook on Environmental Science, Health and Technology (2000); Wiley’s Remediation Technologies Handbook (2004); the Environmental Instrumentation and Analysis Handbook (2005), the six-volume Water Encyclopedia (Wiley Interscience, 2005); and Wiley Interscience’s Nuclear Energy Encyclopedia: Science, Technology, and Applications (2011).

He was featured in Parachute Magazine in March 2010 for setting a new world record, having jumped from an airplane each and every month for 32 years.