(CNN) — In a west London park, a giant red deer roars in the rain. In the south of the city, a swan sits on the side of a road as a red bus hurtles by. And in Bristol, in southwest England, a ...

The “unusual” all-black sika deer was spotted near Kent in England, according to a social media post. Photo by Louis Tripp on Unsplash Stephen Sangster’s social media is filled with videos and photos ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...