Giant Snowballs Wash Up On Siberian Beach
The masses of balls that appeared along 11 miles of coast in western Siberia were snowy and icy. Some of them were small, and some were quite large.
When you step into mud, it kind of slurps up between your toes. What if someone found your mud-slurping footprint 15,000 years from now?
Scientists have uncovered 15,000 year old fossil human footprints, with incredible, mud-slurping detail. What do they tell us about the people that lived there?