Ever thought how much America is worth? Imagine putting a dollar amount on everything in America -all the land, the resources under our feet, our homes, even the water we drink. For the first time, Donald Trump puts a value on it all.

It's an all-American pastime. And if you watched the Season 1 episode hosted by Maggie Gyllenhaal, you know why it's so much fun. This season, we're tackling the topic again -- but this time in an even bigger way by looking at the largest national U.S. sex survey to see what sex in the 21st Century is all about. No questions were too bold for the Indiana University national survey. In fact, only one other survey has ever asked so many Americans such a wide range of questions about sex -- and that was conducted 60 years ago. Over the course of a decade, Alfred Kinsey and his research team conducted thousands of interviews questioning Americans about their most intimate sexual practices -- the results were revolutionary. But how dated has that research become -- and how much has sex in America changed in the last six decades? In “Sex in America,” airing Sunday, Nov.

There are dozens of theories about what caused the calamitous crash of the Hindenburg on May 6, 1937. But what really happened? In this episode of Curiosity, a team of aeronautical engineers sets out to see which theory is correct by building three perfectly accurate 50-foot replicas of the ill-fated airship. Those who tune in will get to see these experts put the leading theories to the test and find out what really destroyed the Hindenburg.

Footage of where the giant squid lives is revealed.

From museums to monster flicks, we're all pretty familiar with mummies. But how much do we really know about them? Turns out, there's quite a bit of missing information -- particularly in regard to the actual process the Egyptians used some 3,000 years ago to preserve their dead. In this compelling episode, Curiosity follows a team of scientists and experts as they attempt to crack the ancient and arresting recipe, and perform a modern-day mummification.

It's meant to be a joyous event - in reality, it's a gripping battle for survival. Using cutting edge technology, we go inside the womb and follow the story from conception to birth, showing how the struggle for life turns into the miracle of birth.

Were we better off as cavemen? Morgan Spurlock ("Super Size Me") joins nine ordinary men and women in an attempt to survive in the wild using only stone-age technology. Cold, dehydration, and hunger threaten to derail the experiment from the start.

With more than 2 million acres of some of America's most rugged, yet beautiful, terrain, Yellowstone Park is not only a national treasure, it's also home to hundreds of species. But beneath its breathtaking beauty lie many unsolved mysteries. In this episode, Curiosity -- with the help of some truly cutting edge imaging technology -- peels back the layers to reveal the invisible forces at work in this iconic place. From the race to predict a massive volcanic eruption and exposing other deadly forces at work to hunting a microscopic predator and seeing nature’s engineering marvels like never before, this is Yellowstone as you’ve never seen it.

End-of-the-world scenarios, including the Mayan prediction for Dec. 21, 2012, are examined from a scientific perspective.

For centuries, Atlantis has been a myth. But in the last decade archaeologists have uncovered new finds which could reveal the location of this ancient apocalypse. Mixing dramatic recreation with science, this story is told by "Lost" star, Terry O'Quinn.

You probably already know that the sun is super old (4 billion years) and incredibly hot (10,000 degrees Fahrenheit). And you might even know that, since it's a giant ball of plasma, it's packed with energy (it will likely blaze for another 6 billion years). It's a friendly neighbor, too -- providing heat and light that make life here on Earth possible. But all isn't entirely rosy. Did you know our sun has a dark side? It's capable of massive destruction! On its surface, a massive storm is brewing -- one so large that it could knock out the power grid, crippling everything from communications systems to banking systems to our water supply. But how prepared are we for a massive solar storm? In this episode, Curiosity goes on a virtual expedition through the heart of the sun to see how these super solar storms form and more.

Season 2 of Curiosity is getting things started with a bang. OK, it's more than a bang. A whole lot more. In a TV first, Discovery Channel remote control crashed a 727 plane. Yes, you read that right - CRASHED A PLANE. In the name of science, of course. The Boeing 727 passenger jet was deliberately crashed in a remote and unpopulated part of the Sonoran Desert, to recreate a serious, but survivable, passenger jet crash landing. Narrated by actor Josh Charles (THE GOOD WIFE), this episode takes viewers inside a full-size passenger airplane on its final flight. An international team of experts is using this amazing event to study the crashworthiness of the aircraft's airframe and cabin as well as the impact of crashes on the human body.

What would it be like to be immortal? It's the year 2967 and Adam Savage is 1000 years old. He reflects on his long life revealing how science in the 21st century transformed his body, creating a supercharged cyber-human, allowing him to live forever.

Millions of people live in the shadow of active volcanoes never knowing when their volatile neighbors could blow. In fact, predicting when a volcano will erupt is nearly impossible. But scientists around the world are getting closer to unlocking their deadly secrets. In this episode of Curiosity, you'll join the world's leading experts as they use state-of-the-art CGI compositing techniques to journey into the heart of these frightening powerhouses to demonstrate how they work and why they are so difficult to understand.

We've read the books, we've seen the movies. War of the Worlds, V, Independence Day. But they're all fiction, right? Well, probably not. New science is suggesting that aliens may be very real, and that they may not be as cuddly as E.T. Host Michelle Rodriguez (Avatar, Battle:LA) brings together top scientists, military strategists and writers to dramatize what would happen if and when aliens attacked.

Mike Rowe (Dirty Jobs) becomes a human lab rat to learn firsthand to uncover the hidden world of creepy crawlies that live on the human body. Revealing a wild jungle of unseen creatures, you'll never look at your body the same way again.

She’s the most celebrated first lady of the ancient world, an icon of power, beauty and mystery for 3000 years. But what became of her? Queen Nefertiti rose to great power in ancient Egypt and at the height of her power her face was everywhere. She may have ruled the most powerful empire on earth and may have been King Tut’s mother but all that is known fully is that at her height of her power she seemed to disappear completely. Now Curiosity is on a search for Ancient Egypt’s most mysterious woman and wants to finally answer the questions of her disappearance from history. Follow the team of experts led by Dr Zahi Hawas as they aim to find the mummy of Queen Nefertiti and solve the secrets of her life.

Eli Roth, director of horror classic Hostel, is searching for the true nature of Evil. In a series of experiments, he examines what causes people to perform evil acts, then the daring test of all-could ordinary people perform acts of violence on strangers

Everything which has made America bountiful and powerful is a product of forces which date back billions of years. How have earth's ancient forces made America what it is today?

Morgan Freeman hosts an exploration into the possibility that there may be more than one version of reality.

In December 1945, five U.S. Navy bombers set out on a training mission from south Florida, heading east over the Atlantic Ocean. After the planes and their crew failed to return to base, another plane was sent out to find the missing men. Neither the original planes nor the rescue plane were ever seen again. Magazines and newspapers reporting on this mysterious event began to refer to the area as the Bermuda Triangle. Over time, the name stuck, as members of the media continued to catalog other strange disappearances and mysterious happenings in that area. In the last hundred years, countless lives have been lost but nobody is really sure why. People have blamed everything from space aliens to sea monsters for the disappearances of ships and aircraft between Bermuda, Puerto Rico and Miami.

Maggie Gyllenhaal hosts a revealing investigation into the mechanics and chemistry of female orgasm.

Robin Williams, who's experienced both the highs and lows of substance abuse, hosts a groundbreaking TV experiment. 4 heavy users on 4 of America's most abused drugs perform a series of physical tests to show exactly how drugs work.

In this episode of Curiosity, we delve into an intriguing -- yet controversial -- topic. If you've read or seen the Manchurian Candidate, then you might be familiar with the big question Brainwashed is trying to answer: Could someone be brainwashed into being an assassin, going against his or her own natural will to commit murder? A team of scientists, with the help of world-renowned hypnotherapist Tom Silver, set out to discover whether we truly are in command of our own minds in this audacious experiment to see if ordinary people can be brainwashed and turned into assassins.

Morgan Spurlock ("Super Size Me") and his group continue their experiment to live in the wild only stone-age technology. Hunger and deprivation push the group to the brink of failure. Can a successful elk hunt save them?