Lake Mead plummets to new low, exposing original 1971 water intake valve

• Containing global warming will be ‘blown out of the water’ if Amazon reaches tipping point
• Southern Californians told to reduce outdoor watering in ‘unprecedented’ order

• Containing global warming will be ‘blown out of the water’ if Amazon reaches tipping point
• Southern Californians told to reduce outdoor watering in ‘unprecedented’ order