-
@ Popular Science
2025-02-20 20:30:13The Great Wall of China is 300 years older than we thought https://www.popsci.com/science/great-wall-of-china-age/?utm_source=flipboard&utm_medium=activitypub Posted into Archaeological Discoveries nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqvrt0yjhmjwl4tcaj6shztpw5yl9l9nuvq83ptw7sxf0aux7689zsffzlw0