PHILADELPHIA (CBS) - Even if you never grow anything from seeds, you can learn a lot about plants by helping out at the Hardy Plant Society Seed Exchange Workshops. There, as smart gardeners sit and ...

Children attend a garbage sorting lesson in Lingdatang community in Hefei, east China's Anhui Province, July 22, 2019. (Xinhua/Liu Junxi) Children attend a garbage sorting lesson in Lingdatang ...