Sacyr's Blog

The invasion of Ukraine has wiped out one of the jewels of world aviation. A Russian attack in February destroyed the Antonov An-225, an achievement of human engineering. This is how its owners aspire to rebuild the largest aircraft on the planet.

If global aviation were a country, it would rank among the top 10 greenhouse gas emitters. A team of researchers claim to have found a way to use food waste, manure and sewage to create more sustainable fuel.

The first supersonic aircraft, which mimicked the shape of a machine gun bullet, proved that it was possible to break the sound barrier. But as that revolutionary innovation was a commercial failure, will supersonic travel ever be economically viable?

The rise of ultra-fast trains is presented as one of the most efficient alternatives to flights or cars. In addition to polluting less, they allow improving the connection between the different urban centers. But to establish itself as the green solution for mass transit, it still has to face significant challenges.