PFAS and Our Genes, Artemis II Science and Awe, and Clearing the Air and Climate Solutions Hope

A 2025 study found that exposure to certain PFAS chemicals, which are pervasive and persistent in the environment and human bodies, can lead to changes in gene expression that are linked to cancers, autoimmune and other immune disorders, and neurological disorders.

Also, the four astronauts of the Artemis II mission in April 2026 made new scientific observations that are helping to expand our knowledge of the Moon, as well as the Earth itself. Artemis II Lunar Science Lead Kelsey Young joins us to talk about the scientific goals and accomplishments of the mission and the unforgettable moments the crew shared with people back on Earth.

And climate solutions like renewable energy tech that requires intensive mining can run into skepticism from people across the political spectrum. But according to data scientist Hannah Ritchie, many of the concerns are based on partial- and misinformation, and the outlook for addressing the climate emergency isn’t as grim as some people may think. Ritchie is the author of Clearing the Air: A Hopeful Guide to Solving Climate Change in 50 Questions and Answers.

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