Last week, the monarch butterfly was officially designated as endangered by the International Union for Conservation of Nature. Scientists estimate that the species' population has dropped between 20% and 90% over the last several decades. Scott Hoffman Black, executive director of the Xerces Society for Invertebrate Conservation, joins Ali Rogin to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Eastern Kentucky is the epicenter Friday of the nation's latest extreme weather disaster. At least 16 people have died in flooding that rewrote the record books and ravaged neighboring states as well. Amna Nawaz has our report. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

A deal formed late Thursday among Senate Democrats would bring substantial new money to boost the expansion of renewable energy and provide more incentives for people to buy electric vehicles. But it also expands more fossil fuel development projects. David Roberts, who covers the politics of climate change in his Substack newsletter and podcast called "Volts," joins William Brangham to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

In Missouri, state and local officials have declared a state of emergency due to severe flooding in St. Louis and the surrounding areas, where historic rainfall turned streets and highways into rivers. Emergency crews rescued hundreds of residents across the region and dozens more fled their homes amid rising waters. Communities reporter Gabrielle Hays joins Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

From the start of the pandemic, scientists have tried to determine exactly where and how the novel coronavirus spread to humans. New studies conclude the virus first emerged from a live-animal market in Wuhan, China. One of the authors of a study, Angela Rasmussen, a virologist at University of Saskatchewan's Vaccine and Infectious Disease Organization, joins William Brangham to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Russia says it will officially withdraw by 2024 from participating in the International Space Station. The country's space chief says Moscow will focus instead on building its own orbiting outpost, spurring concerns. The announcement Tuesday was expected, amid tensions between Russia and the West over the war in Ukraine. Science correspondent Miles O'Brien joins Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

In the foothills of the Sierra Nevada, the sprawling Oak Fire continues to rapidly spread across central California outside Yosemite National Park. The blaze erupted Friday and has now consumed more than 16,000 acres. As firefighters battle the wildfire, the destruction has left thousands fleeing their homes, taking with them whatever they could. Nicole Ellis reports. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

The explosive spread of the Oak fire spread suggests another bad fire season ahead in California. Beth Pratt, the California regional executive director of the National Wildlife Federation, lives in Midpines, California, which is being threatened by the fire. She joins John Yang to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Vaccinations against the monkeypox virus are picking up in the U.S., but access and speed of delivery remain issues as cases spread. This comes as the World Health Organization declared monkeypox a global health emergency. We spoke to Americans who've been exposed and have struggled to get the vaccine, and Gregg Gonsalves of the Yale School of Public Health joins Amna Nawaz to discuss.

PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders

Climate change's connections with the extreme heat and weather events in the U.S. and around the globe have been well established. But climate change is also having a measurable impact on a much slower-moving development: the loss of glaciers and the melting of the ice. Miles O'Brien brings us this update on a scientist's quest to chronicle what's happening with one of the most important glaciers. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders