For most teenagers, technology is about convenience. For 17-year-old Anshul Bhatt, it became a way to solve a problem that hit close to home. When his family dog, Max, was diagnosed with advanced ...

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 ...

Austrian cow, Veronika, uses a stick to scratch herself, demonstrating flexible tool use by applying different parts for different purposes. Researchers from the University of Veterinary Medicine, ...