Analysis by the Transport and Environment (T&E) campaign group, provided to the Guardian, found Carnival to be the most climate-polluting cruise company sailing in Europe in 2023.

Experts say that even if the world stopped emitting greenhouse gases tomorrow, ocean levels would continue to rise.

Calls grow for mandatory measures to reduce underwater noise pollution as melting ice opens up shipping routes.

Chemicals that leach out of plastic are shown to cause fatal abnormalities, including a gut developing outside the body.

Researchers say yellowfin and bigeye tuna catches are on the rise outside a 1.5-million-square-kilometre marine protected area, proving the value of a no-catch zone.

Plastics campaigners call it "astounding" that a multinational they say is the world’s top polluter has sponsored the key UN climate meeting.

António Guterres says growing north and south divide is ‘morally unacceptable’ and dangerous.

The International Seabed Authority, which creates the rules on deep-sea mining, got rid of the independent body responsible for reporting on the negotiations this week.

The UN environment assembly resolution is being hailed as the biggest climate deal since the 2015 Paris accord.

Sri Lankan beaches buried in pellets are only the "tip of the iceberg" of environmental harm after analysis of nurdles from burning ship.