Today, the adzuki bean (Vigna angularis) is cultivated throughout much of East Asia and appears prominently in a variety of dishes across many cultures. It is treasured not only for its nutritional value but for its ability to enrich soils. However, according to a statement released by Washington University in St. Louis (WashU), its cultural importance dates back much further than previously thought. WashU researchers and colleagues from Shandong University identified charred adzuki bean remains from the Xiaogao archaeological site in Shandong, China, that date to 8,000 to 9,000 years ago. These examples are at least 4,000 years older than...