Through the Wormhole

1. S01E01Is There a Creator?June 9, 2010 6.3It's perhaps the biggest, most controversial mystery in the cosmos. Did our Universe just come into being by random chance, or was it create
2. S01E02Season's bestThe Riddle of Black HolesJune 16, 2010 7.3They are the most powerful objects in the universe. Nothing, not even light, can escape the gravitational pull of a black hole. Astronomers
3. S01E03Is Time Travel Possible?June 23, 2010 6.3Einstein's Theory of Relativity says that time travel is perfectly possible — if you're going forward. Finding a way to travel backwards req
4. S01E04What Happened Before the Beginning?June 30, 2010 6.7Every cosmologist and astronomer agrees: our Universe is 13.7 billion years old. Using cutting-edge technology, scientists are now able to t
5. S01E05How Did We Get Here?July 7, 2010 6.7Everywhere we look, life exists in both the most hospitable of environments and in the most extreme. Yet we have only ever found life on our
6. S01E06Are We Alone?July 14, 2010 7.0Aliens almost certainly do exist. So why haven't we yet met E.T.? It turns out we're only just developing instruments powerful enough to sca
7. S01E07What Are We Really Made Of?July 21, 2010 7.0Our understanding of the universe and the nature of reality itself has drastically changed over the last 100 years, and it's on the verge of
8. S01E08Beyond the DarknessJuly 28, 2010 6.0What is the universe made of? If you answered stars, planets, gas and dust, you'd be dead wrong. Thirty years ago, scientists first realized

Season 1 ranked & reviewed

1. S02E01Is There Life After Death?June 8, 2011 6.3In the premiere episode of the second season, Morgan Freeman dives deep into this provocative question that has mystified humans since the b
2. S02E02Is There an Edge to the Universe?June 15, 2011 6.3It is commonly theorized that the universe began with the Big Bang 13.7 billion years ago. But since we can only see as far as light has tra
3. S02E03Does Time Really Exist?June 22, 2011 6.0It is a question that has vexed philosophers and scientists for centuries; 'What is Time?' Exactly how is our past, present, and future conn
4. S02E04Are There More Than Three Dimensions?June 29, 2011 6.7We move and live in three dimensions: length, width, and height. However, Einstein revealed what was once unimaginable: time is actually a d
5. S02E05Is There a Sixth Sense?July 6, 2011 6.3Can we perceive objects and events beyond the world detected by our five senses? The true limits of our human brain remain a scientific myst
6. S02E06How Does the Universe Work?July 13, 2011 6.3Since the ancient Greeks first speculated that everything they observed in reality was the result of the interaction of tiny particles they
7. S02E07Can We Travel Faster Than Light?July 20, 2011 7.0It's called the speed limit of the universe. Einstein blew all of our minds when he worked out the Theory of Relativity, and showed that spa
8. S02E08Can We Live Forever?July 27, 2011 6.0Medical advances have doubled human life expectancy in past centuries. But can humans ever beat death altogether? Can we control and fix the
9. S02E09Season's bestWhat Do Aliens Look Like?August 3, 2011 7.7Science fiction writers have always had their little green men. But these humanoid aliens were based soundly on Earth-based life, not any ex
10. S02E10Are There Parallel Universes?August 10, 2011 7.3Most scientists believe that you are not really you, but rather, you all. On the edge of space, buried in a black hole, or right on top of y

Season 2 ranked & reviewed

1. S03E01Season's bestWill We Survive First Contact?March 6, 2012 8.3Mankind longs for proof that we are not alone in the universe, but the moment of first contact will certainly mean the end of the world as w
2. S03E02Is There a Superior Race?June 6, 2012 7.0How different are the races? Is there even such a thing as race? Could technology create a superior race? The answer may tell us where human
3. S03E03Is the Universe Alive?June 13, 2012 7.3As scientists peer across the galaxy, a new revelation emerges: The universe is shockingly organic. Are the secrets to the life and death of
4. S03E04What Makes Us Who We Are?June 20, 2012 7.7What is it that makes you you? Scientists are searching the brain for the core of who we are - some would call it the soul, others, our pers
5. S03E05What Is Nothing?June 27, 2012 7.0Is empty space really empty? Scientists regard understanding the true nature of empty space may explain where the universe came from, whethe
6. S03E06Can We Resurrect the Dead?July 11, 2012 7.0With cloning and genetic engineering, we can bring back extinct animals. But could we also bring back dead humans? Is it possible to keep ou
7. S03E07Can We Eliminate Evil?July 18, 2012 7.0What drives some to torture and kill without remorse? Why do seemingly normal people commit acts of cruelty and violence. Researchers are ex
8. S03E08Mysteries of the SubconsciousJuly 25, 2012 7.3Does your subconscious know more than you ever will, and is your conscious mind holding you back? Do thoughts control actions, or vice versa
9. S03E09Will Eternity End?August 1, 2012 6.3Many religious traditions have predicted that our world will come to an apocalyptic end. Scientists agree that Earth can't last forever, but
10. S03E10Did We Invent God?August 8, 2012 7.0Our belief in a God above explains all we can't understand. Where do religious beliefs come from? Some experts believe God may exist only in

Season 3 ranked & reviewed

1. S04E01Is There a God Particle?March 20, 2013 7.0Scientists explore the effects of the Higgs Boson discovery, which validates the Standard Model in particle physics and solidifies the under
2. S04E02When Does Life Begin?June 5, 2013 6.5We can all trace our lives back to a beginning. But what defines the beginning? Is it the moment when two cells unite? Or does something hav
3. S04E03Season's bestCan We Survive the Death of the Sun?June 12, 2013 7.5We are all at the mercy of the Sun. Its glowing disc sustains nearly all life on Earth. But the Sun also holds a dark secret: someday, our a
4. S04E04How Do Aliens Think?June 19, 2013 7.0If the stuff of life is spread throughout the cosmos, then the universe could be teeming with aliens. Will alien brains think in ways we und
5. S04E05Will Sex Become Extinct?June 26, 2013 6.0Every single person who has ever lived was created from the genes of one man and one woman. But human sexual reproduction, unchanged for mil
6. S04E06Can Our Minds Be Hacked?July 3, 2013 7.0Our minds store our entire lives, our memories and our deepest desires. Tell no one, and our thoughts remain our own. But our brains are bio
7. S04E07Are Robots the Future of Human Evolution?July 10, 2013 7.0We are in the midst of a revolution so insidious we can't even see it. From our telephones to our vacuum cleaners to our cars, we have robot
8. S04E08Is Reality Real?July 17, 2013 5.0Do we live in the "real world," or is it all in our mind? Our basic assumptions about life and the universe may be false. Is nothing certain
9. S04E09Do We Have Free Will?July 24, 2013 4.5We like to think we are the masters of our fates. But is that really true? What if everything that has happened or will happen in the univer
10. S04E10Did God Create Evolution?July 31, 2013 5.0What or who created all of the billions of species that have lived on Earth? Is all life the product of evolution as Charles Darwin proposed

Season 4 ranked & reviewed

1. S05E01Is God an Alien Concept?March 5, 2014 6.0Is God worshipped in other worlds, across the cosmos? How might alien deities differ from our own? The answer may lie buried on Earth. Anima
2. S05E02Is Luck Real?March 12, 2014 7.3Do you make your own luck, or does luck make you? Some scientists believe luck is strictly a matter of statistics and probabilities…but othe
3. S05E03Season's bestIs Poverty Genetic?June 4, 2014 8.0Are the wealthy just born in the right place at the right time? Are the poor victims of a system designed to keep them down? Or do physics a
4. S05E04How to Collapse a SuperpowerJune 11, 2014 7.3With a little imagination, could a few terrorists sabotage a mighty nation? Perhaps even tear down modern civilization? The stability of the
5. S05E05Does the Ocean Think?June 18, 2014 6.3There could be an undiscovered species on Earth unlike anything we've ever known. Not in the ocean, but the ocean itself! Its body spans tho
6. S05E06Is a Zombie Apocalypse Possible?June 25, 2014 6.0It is a nightmare that has stalked us for centuries: hordes of human beings transformed into mindless, cannibalistic monsters. Could this ci
7. S05E07Is Gravity an Illusion?July 2, 2014 7.0We feel it every moment of our lives but for physicists, gravity is the longest running unsolved mystery of the universe. Why do all objects
8. S05E08Will We Become God?July 9, 2014 6.3Humanity's potential seems limitless. But could we become as powerful as God? Scientific breakthroughs grant our species seemingly divine ab
9. S05E09Is There a Shadow Universe?July 16, 2014 7.0When we look up into the sky it appears we live in a universe that is filled with light. But scientists are now certain there is far more ma
10. S05E10When Did Time Begin?July 23, 2014 6.3We float along the river of time. But does that river have a source? Where did time come from? Some believe time and space are one thing, an

Season 5 ranked & reviewed

1. S06E01Season's bestAre We All Bigots?April 29, 2015 7.3If you had less than one second to make a life-or-death decision to shoot a man who might be armed with a lethal weapon, what would you do?
2. S06E02Can Time Go Backwards?May 6, 2015 5.3The ticking clock could just be a trick of the mind; looking at the possibilities that science can make the clock move backwards.
3. S06E03Are We Here for a Reason?May 13, 2015 6.0The show takes a look at a new theory that says instead of passing on genes, humans have another purpose.
4. S06E04Do We Live in the Matrix?May 20, 2015 5.5Scientists, in various of fields, are taking seriously the possibility that this world maybe a virtual reality.
5. S06E05Are There Aliens Inside Us?May 27, 2015 5.8Odds are pretty good that extraterrestrial life exists; new research shows we should look closer to home, possibly inside our bodies.
6. S06E06Why Do We Lie?June 3, 2015 6.3The brains of pathological liars may provide insights on whether the human brain is wired for lying; technology can either make it easier fo

Season 6 ranked & reviewed

1. S07E01What Makes a Terrorist?August 30, 2016 7.0Investigating the causes of terrorism.
2. S07E02Season's bestIs Privacy Dead?September 6, 2016 7.5Examining a life without privacy in order to solve crimes and prevent terrorism.
3. S07E03Are There More Than Two Sexes?September 13, 2016 7.0Science reveals the line between male and female is blurred, and the battle of the sexes happens deep within our cells.
4. S07E04Can We All Become Geniuses?September 20, 2016 7.5Exploring the possibility of augmenting human mental capabilities through the use of technology.

Season 7 ranked & reviewed

1. S08E01Is the Force with Us?April 25, 2017 6.3New research begins to reveal a hidden force in the universe - one that penetrates space with trillions of invisible connections, instantly
2. S08E02Can We Cheat Death?May 2, 2017 6.3Scientists peer inside the mechanisms of aging, tamper with the cellular makeup of DNA, and imagine a world capable of curing death like a d
3. S08E03Season's bestCan We Hack the Planet?May 9, 2017 8.3Humanity may come to an end if the planet's problems remain unaddressed; scientists unlock the secrets of nature to tame the elements, harne
4. S08E04Is Gun Crime a Virus?May 16, 2017 8.3Every 17 minutes, someone dies from a murderer's gun; a wave of violence that political debate can't seem to stop.

Season 8 ranked & reviewed