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Amy Reichert, who challenged embattled San Diego County Supervisor Nathan Fletcher last year in the District 4 race, will run for the seat again if a special election is held later this year as expected, she announced Wednesday.

The beaches in San Diego are typically packed on Memorial Day, but this year there was some extra room on the sand.

NPR's Michel Martin speaks with Dina Temple-Raston, host of the podcast Click Here, about Ukraine's volunteer IT Army.

Alida Cervantes, Angélica Escoto, Carlos Castro and Cog•nate Collective will show new works in an exhibition celebrating the annual San Diego Art Prize. The cohort represents the binational vitality of the region's art scene.

More women who say they were put in danger by Texas' abortion bans are joining a lawsuit that seek to force the state to clarify medical exceptions in the laws.

New York City officials say they are overwhelmed by an influx of asylum-seekers. Hundreds of immigrants are crowded into at least one detention center.

Fort Lee, named after the leader of Confederate forces during the Civil War, was redesignated on Thursday to honor Lt. Gen. Arthur Gregg and Lt. Col. Charity Adams.

Some legal scholars and activists say an obscure provision of the Constitution, dating back to just after the Civil War, should disqualify Donald Trump from a second White House term.

A report published by the United Nations Intergovernmental Panel on Climate Change shows a world on track to push past the 1.5 degrees Celsius mark. While the IPCC is calling on political leaders to act on a national and international scale, the report authors said that work at the local level is also critical. In recent years, there’s been a shift in perspective on who is truly responsible for the sweeping changes needed to limit emissions. Meanwhile, young people are in the forefront of climate activism. Their networks span countries and continents for one goal – saving the future. Plus, San Diego researchers working to stave off the worst impacts of global warming are looking for answers in the region’s wetlands. Cattails could be part of the answer. And, California state air regulators put forth a bold proposal to move the state away from gasoline powered cars to a greener future- one led by electric vehicles. Finally, participating in clean-ups and trash pickups are always popular around this time of year as Earth Day makes people more conscious than ever about the necessity of caring for the environment. But where does the trash end up? Big questions remain about our landfills and if recycling is working.

NOVA and paleontologist Dr. Emily Bamforth team up to explore questions that have plagued paleontologists for decades -- was the meteor impact to blame for the dinosaur mass extinction, or was there already an extinction going on? And why did this meteor impact cause an extinction when others in Earth’s history didn’t? Dr. Emily Bamforth's research from studying over 12,000 microvertebrate (very small) fossils from the Late Cretaceous suggests that the ecosystem just before the mass extinction was unstable due to environmental factors like long-term climate change, mass volcanism, and more. When the meteor impact occurred, the ecosystems collapsed entirely, just like a Jenga Tower would if too many blocks had already been pulled out. To learn more about the day the dinosaurs died, watch NOVA "Dinosaur Apocalypse," a two-hour special premiering at 9/8c on Wednesday, May 11 on KPBS TV. https://www.pbs.org/wgbh/nova/series/dinosaur-apocalypse/ RSVP NOW Speaker Bio: Dr. Emily Bamforth decided to be a paleontologist at the age of four. She completed a BSc degree in Evolutionary Biology at the University of Alberta, which sparked a fascination in the origins of multicellular life on Earth. She earned her MSc degree at Queens University in Kingston, ON, studying fossils of some of the oldest complex multicellular life on the planet. She completed her PhD at McGill University in Montreal, with a thesis based on the dinosaur mass extinction in Saskatchewan. After graduating in 2014, she worked as a paleontologist with the Royal Saskatchewan Museum, where her research focused on Late Cretaceous and early Cenozoic paleoecology and paleobotany. Now at the Philip J. Currie Dinosaur Museum, she works with late Cretaceous paleoecosystems at high latitudes, which includes studying a massive dinosaur bonebed near Grande Prairie, Alberta. She is also an adjunct professor in the Geology Department at the University of Saskatchewan.