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 ...

Defecation is commonly treated as a universal feature of animal life, a visible outcome of digestion and metabolic turnover.

From frogs and sponges to jellyfish and tardigrades, scientists reveal how some animals digest food without defecating, ...

(CNN) — Hottest day, hottest week, hottest month, and – increasingly likely – hottest year; 2023 has garnered unwanted records as the climate crisis escalates. (CNN) — Hottest day, hottest week, ...