(La Paz and its harbor, Mexico) The Sea of Cortez was once pearl-rich, but for unknown reasons there’s been a dramatic decline in its pearl-producing clams during the past half century. Some postulate it’s because of…
Machu Picchu is a well known Inca ruin situated on top of a steep granite peak in the Peruvian Andes (2430 m above sea level). Despite the altitude, its location near the equator provides a warm climate and the hills on which it rests are…
(La Paz and its harbor, Mexico) The Sea of Cortez was once pearl-rich, but for unknown reasons there’s been a dramatic decline in its pearl-producing clams during the past half century. Some postulate it’s because of…
Machu Picchu is a well known Inca ruin situated on top of a steep granite peak in the Peruvian Andes (2430 m above sea level). Despite the altitude, its location near the equator provides a warm climate and the hills on which it rests are…