As I sink beneath the belly of a massive cargo ship, I glide my hand down the side of the ... to get a better view inside the tunnel ... swim right into the ship’s giant propeller.

Lade AS claims the ship's airfoil shape will allow it to point up to 18 degrees into the wind, a vacuum on the side sheltered from the wind propelling the ship forward.

The researchers estimate it would cost US$20,000 to place the bionic dolphin skin over a propeller, which would deliver cost savings of over $140,000 a year while cutting CO2 emissions by more ...

The shipping industry's climate impact is large and growing, but a team in Costa Rica is making way for a clean shipping revolution with a cargo ship made of wood.