Cybil Preston, chief apiary inspector for the Maryland Department of Agriculture, does a training run with Mack: She sets up fake beehives and commands him to "find." He sniffs each of them to check for American foulbrood. He has been trained to sit to notify Preston if he detects the disease. Morgan McCloy/NPR hide caption

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A bee gathers pollen from a park in Kensington, Md. With bee health in mind, home and garden products giant Ortho has announced it will phase out neonics, a class of pesticides, from its outdoor products. Allison Aubrey/NPR hide caption

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Home And Garden Giant Ditches Class Of Pesticides That May Harm Bees
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A beehive at Frangiosa Farms, in Parker, Colo. The farm introduced an adopt-a-hive program in 2012. The one-time adoption fees per hive range from $45 to $130 (the latter gets you three jars of honey). Courtesy of Nick French/Frangiosa Farms hide caption

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Earlier this year, beekeeper Brian Hiatt had millions of bees working to pollinate almond trees across California. Ezra David Romero/Valley Public Radio hide caption

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Maryann Frazier, a researcher at Penn State's Center for Pollinator Research, checks on one of her experimental honeybee hives. Frazier is testing the effects of pesticides on honeybee colonies. Lou Blouin for NPR hide caption

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Peponapis pruinosa is a species of bee in the tribe Eucerini, the long-horned bees. This bee relies on wild and cultivated squashes, pumpkins, gourds and related plants. Wikimedia/USDA hide caption

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A hollow log hive in the Cevennes region of France reveals the details of circular comb architecture of the Western honeybee. New research shows the partnership between humans and bees goes back to the beginnings of agriculture. Eric Tourneret/Nature hide caption

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Beekeeper Rob McFarland (photographed last year) inspects the beehive he keeps on the roof of his Los Angeles house. The Los Angeles City Council voted unanimously on Wednesday to allow residents to keep beehives in their backyards. Damian Dovarganes/AP hide caption

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Dry conditions in California have limited the amount of pollen and nectar bees can collect. Ezra David Romero/Valley Public Radio hide caption

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Drought Is Driving Beekeepers And Their Hives From California
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Penn State grad student Carley Miller holds up a bumblebee she collected from the wildflower patch on Penn State University's research farm near State College, Pa. Researchers are testing how planting "pollinator strips" of wildflowers near farm fields could help support wild bee populations. Courtesy of Lou Blouin hide caption

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Ready, set, fly! The ball bearings glued to this bumblebee's legs simulate the weight and placement of pollen loads. The tag on the insect's back is a lightweight sensor, designed to track its movements in flight. Courtesy of Andrew Mountcastle hide caption

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Heavy Loads Of Pollen May Shift Flight Plans Of The Bumblebee
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A bumblebee collects pollen from a flower. New evidence suggests climate change has left bumblebees with a shrinking range of places to live. Yuri Kadobnovy/AFP/Getty Images hide caption

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Buzz Kill For Bumblebees: Climate Change Is Shrinking Their Range
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