Astrophysicist Charles Liu of the American Museum of Natural History and the College of Staten Island explains what the summer solstice is and why we celebrate the longest day of the year.
View the segment on AOL Video>
Astrophysicist Charles Liu of the American Museum of Natural History and the College of Staten Island explains what the summer solstice is and why we celebrate the longest day of the year.
View the segment on AOL Video>