Scorching heat has hit many European cities this summer. To lower average temperatures, engineers in Spain’s Seville have come up with a way to replicate the ancient technology of the qanats, which Iranians created more than 1,000 years ago.
Published in the journal Nature Plants last month, the report claims scores of the ancient baoab trees, some of which are up to 3,000 years old, are now dying because of rising global temperatures.
