Secretary of State Katie Hobbs is calling for the removal of confederate monuments in the state. We learn more about why these monuments to the confederate cause even exist, here and around the country.
A team of modern adventurers take on the massive challenge of reliving the first-ever exploration of the mighty Colorado River through the Grand Canyon.
Follow along as NASA launches the Mars 2020 mission, perhaps the most ambitious hunt ever for signs of life on Mars, Wednesday, Feb. 24 at 8 p.m.
Return to the beginning of the phenomenon Feb. 27 (streaming) and March 7 (on air). After the Titanic goes down, the Crawley family and their household meet the new heir. All the drama, romance, scheming and triumph lie ahead.