Delta, one of the dolphins, with a sound tag to measure his clicks and whistles during the experiment Dolphins struggle to hear each other and cooperate in a world of increasing noise pollution ...

"So the idea is to use those to measure the changes in ... big impact on the world's oceans - with pollution and climate change - but the thing about noise is that it's relatively easy to turn ...

Addressing a press conference on Monday, the Honourable Commissioner for the Environment and Water Resources, Mr. Tokunbo ...