Scientists' work in Peru's northern Zaña Valley in 1989 discovered what ancient artefacts, a mitigation of the valley's dry climate?
Stone-lined irrigation channels, canals or aqueducts, from 0.6 to 2.5 miles (1 to 4 km) in length The canals are estimated to be around 5,400 years old.
The effects of a massive underwater volcanic eruption in Tonga and the tsunami it triggered on 15 January 2022 were noticeable globally. What was one effect in Peru?
