The First Amendment and the very idea of free speech are under attack in America today. A growing number of Americans don't believe you have the right to speak your mind if what you have to say might offend someone, somewhere. They advocate for 'safe spaces' in which people won't be offended by ideas they may find troubling. But is that what America is about?
In No Safe Spaces, comedian and podcast king Adam Carolla and radio talk show host Dennis Prager travel the country, talking to experts and advocates on the left and right, tour college campuses, and examine their own upbringings to try to understand what is happening in America today and what free speech in this country should look (and sound) like.

Dr Hannah Fry travels down the fastest zip wire in the world to learn more about Newton's ideas on gravity. His discoveries revealed the movement of the planets was regular and predictable. James Clerk Maxwell unified the ideas of electricity and magnetism, and explained what light was. As if that wasn't enough, he also predicted the existence of radio waves. His tools of the trade were nothing more than pure mathematics. All strong evidence for maths being discovered.
But in the 19th century, maths is turned on its head when new types of geometry are invented. No longer is the kind of geometry we learned in school the final say on the subject. If maths is more like a game, albeit a complicated one, where we can change the rules, surely this points to maths being something we invent - a product of the human mind. To try and answer this question, Hannah travels to Halle in Germany on the trail of perhaps one of the greatest mathematicians of the 20th century, Georg Cantor. He showed that infinity, far from being infinitely big, actually comes in different sizes, some bigger than others. This increasingly weird world is feeling more and more like something we've invented. But if that's the case, why is maths so uncannily good at predicting the world around us? Invented or discovered, this question just got a lot harder to answer.

Deep in the mountains of West Virginia, the Green Bank Observatory has been receiving a mysterious signal from deep space. A team of astronomers has been detecting high-energy bursts erupting from unknown sources far off in space since years ago. But one of them is different from the rest. They call it FRB 121102.
What is actually giving rise to this very powerful flash? Could this be a message from an advanced civilization, or is it a much stranger and violent occurrence? Visit the largest steerable radio telescope on the planet for answers.

Quinto sets out to discover whether aliens exist and what evidence we have to prove it. He meets with several who say they have encountered extra-terrestrial life–a man who has been abducted by aliens several times since childhood; a man who claims to have extracted an alien implant; and a woman who shows Zachary what it feels like to be abducted into a spacecraft.
Zachary also meets with the world's leading scientists at SETI in Green Banks, West Virginia. There, utilizing the world's largest telescope, they show him the methods they employ to communicate with potential other-worldly visitors and what this research has taught them about a mysterious radio signal they picked up 3 billion light years away.

Although the end of the Soviet Union also meant the end of the KGB, it did not mean the end of secret service activities. FSB and the foreign intelligence service SVR took over the tasks. Under the secret service officer Vladimir Putin, the tasks of the secret service were redefined, and digital age with the Internet brought new possibilities for internal and external espionage and for the manipulation of public opinion.
Coup d'etats, assassinations, sex scandals, radioactive poisoning....it's the stuff of a Bond movie. But in today's Russia, it's all very real. Under Vladimir Putin, the FSB rules Russia with an iron rod directly from the Kremlin. To challenge its authority, even from apparent safety abroad, means risking your life. The KGB has even managed to outlive communism itself. Today, Russia is no longer a State with a Security Service: instead, the Security Service has a State.

For decades some have suspected that there might be others out there, intelligent beings capable of communicating with us, even visiting our world. It might sound like science fiction, but today scientists from across the globe are scouring the universe for signals from extraterrestrials. Horizon obtained exclusive access to film researchers at the Green Bank Telescope searching for radio signals from Tabby's Star, a star so mysterious that some scientists believe it might be surrounded by a Dyson Sphere, a vast energy collector built by advanced aliens.