Future Timeline

Green ammonia offers a solution to one of the hardest tasks in decarbonization: replacing diesel in large ships. Yara is stepping forward with a commitment to launch the world's first clean ammonia-powered container ship, ready for service in 2026.

Marine diesel is an incredibly convenient energy source for great big ships, storing lots of energy and being easily available whichever port you pull into. But while shipping is a relatively efficient way to move goods in bulk, it's also responsible for somewhere between 1.7 and 3% of global CO2 emissions, depending on who you ask, and it'll need to be cleaned up in the race to zero.

Hyundai has presented a new wheel and tire design that incorporates built-in snow chains that deploy and retract at the push of a button, potentially putting an end to the fiddly, freezing process of wrapping and removing traditional snow chains.

Each of the tires will have six indented grooves across it, in line with the wheel's six spokes. Inside these grooves live thick snow chain-like wires, retracted well back into the tread.

These are partially made using compressed shape memory alloys, which can be activated and expanded when an electric current is sent through them. So when the road starts looking sketchy, or the law requires snow chains, it's a simple matter of pressing a button. The shape memory alloy reverts to its original shape, pushing the wire loop up above the level of the tread. At that point, you're good to go; no wet knees, slushy shoes or freezing fingers required.