Get the latest Science News and Discoveries
Vitamin D Supplements Don’t Help Another Condition, Study Finds
None
Or read this on New York TimesGet the latest Science News and Discoveries
None
Or read this on New York TimesRead more on:
Related news:
Stonehenge was likely and ancient solar calendar. According to a new study, a circle of 30 upright "sarsen" stones marked the days each month. Four stones on the outside of the circle tracked leap years. The top of the circle illuminated during summer solstice, and the bottom during winter solstice.