Ancient Geoglyphs Discovered in Kazakhstan

WORLD Space-age technology has revealed an ancient mystery on the ground. (New York Times) Download, annotate, and print your own map of Kazakhstan here. Teachers, scroll down for a quick list of key resources in our Teachers’ Toolkit. Discussion Ideas Using satellite imagery, NASA recently documented a series of geoglyphs in a remote region of central Kazakhstan. What are geoglyphs? A geoglyph is a large … Continue reading Ancient Geoglyphs Discovered in Kazakhstan

Pollen Down: Clues about Civilizations’ Collapse

SCIENCE What happened about 3,200 years ago to bring about the collapse of not just one but a number of flourishing civilizations—Egyptian, Hittite, Mycenaean—on the eastern shores of the Mediterranean? Wars, pestilence, and sudden natural disasters have all been postulated as possible causes, but now, thanks to sophisticated pollen-sampling techniques and advances in radiocarbon dating, scientists think they know the primary culprit: drought. (National Geographic … Continue reading Pollen Down: Clues about Civilizations’ Collapse