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About 75% of the world’s flowering plants and about 30% of crops rely on pollinators. Things like habitat loss, pesticide use, climate change, and invasive species are all threats to pollinator populations, which are truly essential for both ecological balance and food security. On August 22-23 Floridians can do their part as citizen scientists to help researchers keep tabs on the health of pollinator populations by participating in the Great Southeast Pollinator Census. To participate, during those two days you simply pick one or more plants in your yard that attract pollinators and watch them closely for 15 minutes and count each time an insect lands on the plant, and then upload that information into a database.

In the late 1990s an ethnobotanist named Dr. Paul Cox spent time in two villages on the Pacific island of Guam where a huge percentage of residents were dying of a neurodegenerative disorder that’s similar to Alzheimer’s Disease or ALS. He found links between the villagers’ diet, which included large fruit bats called flying foxes, and cyanobacteria toxins that were accumulating in the seeds of cycad trees, which the foxes would eat. This led to villagers having huge amounts of the toxins in their bodies. He joins us to talk about the work he did on Guam, and where the research is at today.

Jane Greenhalgh is a senior producer and editor on NPR's Science Desk.

Alex Blumberg is a contributing editor for NPR's Planet Money. He is also a producer for the public radio program This American Life, and an adjunct professor of journalism at Columbia University. He has done radio documentaries on the U.S. Navy, people who do impersonations of their mothers and teenage Steve Forbes supporters. He won first place at the 2002 Third Coast International Audio Festival for his story "Yes, There is a Baby." His story on clinical medical ethicists won the 1999 Public Radio News Directors Incorporated (PRNDI) award for best radio documentary.

Linda Gassenheimer hosts Topical Current's Food News & Views segment every Thursday from 1:30 to 2 PM. Join Linda with your questions and suggestions at 800-743-WLRN (9576) during the program.

I manage WLRN's multimedia and engagement projects, including work on WLRN.org, all our social media platforms, and community events.

Regular listeners of this show will be familiar with the podcast series, The Last Ride, which we’ve been airing in serial since the first episode released in early April. It uses extensive reporting done over two decades to tell the story of two young men of color who disappeared in Naples — both of whom were last seen with the same Collier County Sheriff’s deputy, Steven Calkins, who is now retired. Deputy Calkins was fired for giving inconsistent statements about the cases, but was never formally accused of any wrongdoing in their disappearances. We sit down with three of the four-member team who reported on this story, and worked together to produce the podcast, to talk about that process and whether The Last Ride has brought forth any new information that might illuminate just what happened to Filipe Santos and Terrance Williams.

For small-scale farmers in underdeveloped countries around the world, who often have no access to capital or most of the technologies and amenities we take for granted, the idea of being more sustainable isn’t something to strive for but a true necessity. Located in North Fort Myers on a 57-acre campus, the nonprofit ECHO has been working to disseminate information to help these farmers since 1981. They grow different varieties of plants, and test different growing techniques, in order to provide proven techniques and even seeds to small-scale farmers. They distribute more than 300 varieties of ECHO seeds. This information is sent out through their massive, global network of farmers and agriculturalists in more than 190 countries. We get an update on the work they do with their CEO, Dr. Abram Bicksler.

Jay Field is a reporter for MPBN Radio based in the network’s Bangor bureau. In his reporting for the network’s flagship program, Maine Things Considered, Field enjoys exploring how real people’s lives are impacted by the unique policy challenges, economic, education, natural resource and otherwise, that come with daily life in a rural state.

Tom Goldman is NPR's sports correspondent. His reports can be heard throughout NPR's news programming, including Morning Edition and All Things Considered, and on NPR.org.