The viewers are faced with survival dilemmas. Each answer is scientifically explained.

Bill Nye explores science and its impact on politics, society and pop culture. Each episode tackles a topic from a scientific point of view, dispelling myths, and refuting anti-scientific claims that may be espoused by politicians, religious leaders or titans of industry.

In the early 1900s, Albert Einstein developed an idea - called Relativity - that changed our understanding of reality. It explained how both space and time were flexible - and how the Universe was made of a four-dimensional fabric called space-time. This single idea gave us a new way to understand the force of gravity, explained how the stars were born and introduced us to the concept of the big bang. And, in the hands of Stephen Hawking, it allowed us to understand the most extreme monsters in the Universe - black holes. This two-part BBC documentary explores how two of the most famous scientists of the 20th Century transformed our understanding of the Universe - thus changing the world.

The Rover Arrives features some of the most incredible moments from the landing, including the first images that will be beamed back from Mars. Providing commentary for the special is Mark Rober, who worked on earlier Mars Curiosity rover mission at JPL and has since developed a huge following on YouTube, and NASA expert Ken Williford, who serves as the Deputy Project Scientist for the NASA Mars 2020 mission as well as the director of the JPL’s abcLab. Also streaming Thursday on discovery+ is NASA Mars Landing: Inside the Mission, which gives viewers an in-depth look at the Mars Perseverance Rover.

How To Survive the End of the World examines terrifying and scientifically plausible doomsday scenarios by exploring distinct, world-threatening events and the methods by which humanity would fight to survive against grim odds.

Scientists and sci-fi writers explore a hypothetical first-contact event between aliens and humans.

When 2% of the world's population abruptly disappears without explanation, the world struggles to understand just what they're supposed to do about it. The drama series 'The Leftovers' is the story of the people who didn't make the cut.