Seeking endorsements for her new book, Chanda Prescod-Weinstein finds herself staring at fundamental questions of space, time ...

Michael McKean, Annette O'Toole and Holly Robinson Peete will join Lester Holt, numerous others for September 28 "Dateline" event at The Pinnacle.

Time dilation, a captivating concept embedded in Einstein’s theory of relativity, has been experimentally validated on Earth.