A census of the natural world emerges from engaging millions in nature, while a free phone app called iNaturalist identifies plants, animals, birds, and bugs. Meanwhile, a fierce debate brews over the removal of signs promoting climate change and divisive narratives at national parks, and a legendary comedian Sid Caesar's talent is being reevaluated. In other news, chef and owner of London's River Cafe Ruthie Rogers shares her story of connecting people over food, and actress Lisa Kudrow discusses her return to her iconic character Valerie Cherish in The Comeback. Additionally, New Jersey Senator Cory Booker talks about his new book and his hopes for a more perfect union, and author Arthur Brooks charts an unlikely path to happiness by learning to manage devices and live with silence. [... more]