The new large millipede species was discovered in Colombia’s department of Boyacá, in the foothills of the Andes, about 1,600 feet above sea level, according to a study. Ricky Beron via Unsplash ...

(Reuters) - During the Carboniferous Period, Earth's atmospheric oxygen levels surged, helping some plants and animals grow to gigantic proportions. One notable example was Arthropleura, the biggest ...

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 ...