Photo: Algae blooms are a frequent problem in Lake Erie. (AP) When it comes to dirty lakes and rivers, governments…
Photo: The watery oasis of Ubari in the deserts of Libya. Sfivat/Wikipedia (public domain) In 1900, just 15% of the…
The Fez River winds through the medina of Fez, Morocco — a maze-like medieval city that’s a World Heritage site.…