/u/keepthepace's posts
Mark as read: Add to a list
Mark as read: Add to a list
300 000 years ago, the Sahara was not a desert and was inhabited. If a stone wall was built there at the time, where would it be now? Buried in sand? At what depth? How about a tomb?
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
Mark as read: Add to a list
What is the plausibility that there is a black hole in the center of the Sun? Or in the center of the Earth?
Mark as read: Add to a list
Mark as read: Add to a list