Unwind by hunting for words on the day’s themed list — they’re hidden horizontally, vertically, diagonally and backward. Come back daily for a new theme or to browse the recent archive. Jump in to ...
Fossilized footprints, preserved in gypsum mud that hardened over time, are estimated to be 23,000-21,000 years old. NPS / Alamy Ancient human footprints, preserved in a dry lakebed at White Sands ...