Soybeans are sprayed in Iowa in 2013. Enlist Duo is a mixture of two chemicals that farmers have used separately for many years: glyphosate (also known as Roundup) and 2,4-D. The new formulation is intended to work hand-in-hand with a new generation of corn and soybean seeds that are genetically engineered to tolerate sprays of both herbicides. Charlie Neibergall/AP hide caption

toggle caption Charlie Neibergall/AP

The excavation at Ahihud in the Galilee region of Israel where archaeologists found fava beans dating back 10,000 years. Yaron Bibas/Courtesy of Israel Antiquities Authority hide caption

toggle caption Yaron Bibas/Courtesy of Israel Antiquities Authority
Chris Nickels for NPR

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

toggle caption Wikimedia/USDA

Gov. Jerry Brown (left) meets with Prime Minister of India Narendra Modi in San Jose, Calif., on Sept. 27. Brown has been brokering his own international agreement on climate change. Jeff Chiu/AP hide caption

toggle caption Jeff Chiu/AP

The holidays are all about generousity, gratitude, and spending time with the people we love. But we all know the whole "spending time with the people we love" part has its challenges. Hidden Brain is here to help. iStock hide caption

toggle caption iStock