In this week’s newsletter: The public stranding of a young humpback exposes tensions between animal rights activism and other choices around biodiversity • Don’t get Down to Earth delivered to your inbox? Sign up here In this week’s newsletter: The public stranding of a young humpback exposes tensions between animal rights activism and other choices around biodiversity Don’t get Down to Earth delivered to your inbox? Sign up here Timmy the whale is lost at sea , presumed dead. In normal