We travel across the globe and meet the people behind the most fascinating environmental, health and technological innovations in a bid for sustainable solutions to our changing world. Every other Sunday at 8.40 pm.
Tiny plastic particles, barely visible, are infecting the world's sea and oceans, where they're being eaten by fish and other aquatic species before making their way up the food chain to our dinner plates. This week Down to Earth examines the efforts underway to measure the extent of this man-made pollution.
Sustainable Minute: Warka Water, drinking water from air