Every year, hundreds of climbers flock to the Himalayas to take on Mount Everest. But a new study has warned that climbers are unknowingly destroying Everest's glacier...with their urine.

Climbers and guides drink large volumes of water at altitude to avoid dehydration, and collectively produce more than 6,000 litres of urine a day

Every year, hundreds of climbers flock to the Himalayas to take on Mount Everest. But a new study has warned that climbers are unknowingly destroying Everest's glacier...with…