Governments must start delivering real change to save the global environment, the acting executive director of United Nations Environment Assembly said March 11.

The world is warming rapidly, becoming more polluted, and quickly losing its biodiversity and “we have now surpassed several of the ecological thresholds mapped by science,” Joyce Msuya said at the Fourth Session of the U.N. Environment Assembly in Nairobi, Kenya.

“Time is running short,” she added. “We are past pledging and politicking, and we are past commitments with little accountability.”

More than 4,700 delegates are meeting March 11-15 under the auspices of...