Speaking to the UN, President Trump railed against climate science and clean energy, drawing sharp rebukes from other nations, rival politicians and business leaders. Meanwhile, China for the first time ever announced a specific target for reducing its greenhouse gas emissions.

Also, the four-lane Great Highway used to run along the Pacific Ocean on the west side of San Francisco, where it was at risk of erosion from sea level rise. Now it’s been transformed into a park where visitors can bike, walk, skate, and play next to the water.

And the new Vera C. Rubin observatory telescope in Chile features the largest camera ever built, at about the size of a small car, and will soon begin photographing the entire southern sky repeatedly for a full decade. Astronomers hope this new telescope will help advance our understanding of dark matter and reveal hard-to find interstellar objects.

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New research finds that since 2010 killer heat waves have become 200 times more likely, thanks to greenhouse gas emissions, and the scientists say about half of the increase in heatwaves can be attributed to big coal, big oil, big gas and cement.

Also, while the 2025 Atlantic hurricane season has been relatively quiet, last year damages from three major hurricanes ran to over 200 billion dollars and claims have stressed homeowners and insurance companies alike. We hear about Florida homeowners facing rising premiums and the cancellation of their insurance policies.

And as the air turns crisp in the northern U.S., many of us are heading out for the autumn tradition of apple picking. The fascinating and complex science and history behind the iconic apple.

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The Trump Administration is putting offshore wind energy on hold by canceling grants, cutting tax credits and revoking permits for projects that are nearly complete. We discuss the economic impacts to port communities and the view that the US is ceding the opportunity to be a global leader in renewable energy.

Also, with the Arctic warming four times as fast as the rest of the globe, and fires now routinely burning large swaths of northern forests, carbon stored in permafrost is rapidly escaping into the atmosphere where it can warm the planet even faster. How Indigenous cultural practices can help protect this vital resource.

And human-made noise is bad for our health, disrupts our natural world, and hinders our ability to connect with one another. The book Clamor: How Noise Took Over the World and How We Can Take It Back explores the hidden costs of unwanted sound and advocates for turning down the volume on human-made noise.

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New Jersey officials are calling its $2 billion settlement with major manufacturers of PFAS “forever chemicals” the largest environmental settlement ever won by a state. We discuss the legacy of industrial contamination in the state and how the settlement is expected to pay for cleanup as well as restoration of degraded ecosystems.

Also, scientists in the UK were able to use genetically modified bacteria to turn plastic bottles into the common pain reliever acetaminophen, also known as paracetamol and Tylenol. The lead researcher speaks with us about the potential applications of this biotech breakthrough.

And with an unusually short period for public comments the Trump administration is moving to repeal the “Roadless Rule,” which currently protects over 45 million pristine acres of national forests from access roads for logging. A public lands advocate explains the potential consequences for critical habitat, watersheds, carbon storage and recreation if the Roadless Rule is repealed.

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Oysters on the half shell are big business on Nantucket Island, and a local program recycles oyster shells from restaurant waste into habitat for young oysters. These recycled oyster shell reefs are helping to protect the coastline from worsening storms and rising seas.

Also, seventy percent of our planet is covered by the oceans, and in this vast wilderness lawlessness is rampant, with crimes ranging from illegal fishing to slavery at sea. These high crimes on the high seas are the focus of Pulitzer Prize-winning author Ian Urbina’s book, The Outlaw Ocean.

And the Mar Menor or “little sea” lagoon on the coast of Spain faces impacts from mining, agriculture, and a booming tourist industry. Teresa Vicente helped pass a 2022 law granting the lagoon legal personhood to give it greater protection. She received the 2024 Goldman Environmental Prize for Europe and shares how she led a grassroots movement to protect this beloved lagoon.

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Around a thousand of the firefighters who battled blazes around southern California in January 2025 were incarcerated. They do essentially the same work as other firefighters but are paid as little as around $5 a day. A formerly incarcerated firefighter shares what it was like and how the experience helped him forge a new life after prison as a professional firefighter.

Also, as the water supply in Athens, Greece dwindles and demand surges from residents and tourists alike, the city is looking to antiquity for solutions. One that’s attracting attention is an ancient aqueduct that runs beneath Athens.

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Sounds like the overlapping songs of birds can speak volumes about the biodiversity in an ecosystem, and now scientists are looking to use the tiny sounds made by earthworms, ants, and voles to study the health of soils.

 Also, "depaving parties" of volunteers with sledgehammers are turning paved yards into pollinator havens and green space. That can help reduce climate impacts from extreme heat and flooding.

Plus -- a scientist who rappels down cliffs to hand-pollinate endangered plants. A vine that mimics the leaves of nearby species. Rice that crowds out strangers but leaves room for the roots of relatives. The book “The Light Eaters” tackles big questions of plant intelligence, consciousness, and communication.

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A study from Johns Hopkins researchers found that residents near or on the fence line of polluting enterprises are at higher risk for multiple health problems because of the toxic mix of air they breathe. The lead researcher explains the study.

Also, astronomer Phil Plait wondered what it would be like to walk on Mars, fall into a black hole, or fly through a nebula, so he wrote a book, Under Alien Skies: A Sightseer’s Guide to the Universe. He reveals the strange colors of a sunset on Mars, what it’s like on a planet orbiting binary stars, the unique challenges of landing on an asteroid, and more.

And a paper published in the journal Scientific Reports describes the case study of an orangutan who treated and healed his own wound. Zoologists have long seen behaviors of self-medicating in the animal kingdom, but until now it has rarely if ever been documented in scientific literature.

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Eels play an important ecological role in many rivers and streams, but they’re so eel-usive that even eel scientists have been challenged to observe them mating in the wild. Ellen Ruppel Shell is author of the 2024 book Slippery Beast: A True Crime Natural History, with Eels, and she sheds light on the eel’s murky ecology and path through the seafood industry.

And the relentless heating of the Earth is prompting people to move after climate-related catastrophes and amid more gradual changes. Journalist Abrahm Lustgarten is the author of On the Move: The Overheating Earth and the Uprooting of America, about the northward migration he anticipates as Americans seek to escape punishing heat, fire, and drought.

Also stargazing has profoundly shaped who we are as human beings, and gave rise to science, religion, and origin stories from diverse traditions. Roberto Trotta, the author of the new book Starborn: How the Stars Made Us (And Who We Would Be Without Them) joins us to discuss how studying the night sky shaped science and why satellites now threaten our connection to the stars.

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The US Environmental Protection Agency is shutting down its Office of Research and Development, which represents 50 years of independent scientific research. We explain the impact of this federal decision on both EPA employees and science.

Also, National Parks are undergoing increased layoffs and funding cuts under the second Trump administration stretching staff short. A former NPS employee speaks out.

And Wildfire season is scorching through Canada and a particularly dangerous kind of fire, known as “zombie fire”, can survive through the winter months by smoldering underground.

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