Kurzgesagt - In a Nutshell - Season 12 Episode 12 We Traveled Back in Time. Now Physicists Are Angry.
Season - Episode
13
Season 13 Feb 04, 2025
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13 - 1 -
13 - 2This Is NOT An Anti Meat Video Feb 25, 2025 -
13 - 3Why Your Brain Blinds You For 2 Hours Every Day Mar 18, 2025 -
13 - 4SOUTH KOREA IS OVER Apr 02, 2025
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13 - 5 -
13 - 6We Finally Answered the MOST Important Question May 06, 2025 -
13 - 7Why Does Fentanyl Feel So Good? May 20, 2025 -
13 - 8
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13 - 9The Betrayal of Autoimmune Diseases Jul 01, 2025
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13 - 10Let's Kill You a Billion Times to Make You Immortal Jul 29, 2025
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13 - 11Alcohol is AMAZING Aug 12, 2025
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13 - 12The Drug That Works TOO Well? Aug 19, 2025
12
Season 12 Jan 30, 2024
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12 - 1Did The Future Already Happen? - The Paradox of Time Jan 30, 2024 -
12 - 2What Happens AFTER Nuclear War? Feb 20, 2024 -
12 - 3The Paradox of an Infinite Universe Feb 27, 2024 -
12 - 4How The Dinosaurs Actually Died Mar 26, 2024 -
12 - 5 -
12 - 6Smoking is Awesome May 07, 2024 -
12 - 7This Black Hole Could be Bigger Than The Universe May 21, 2024 -
12 - 8Do You Have a Free Will? Jun 11, 2024 -
12 - 9This Disease is Deadlier Than The Plague Jun 25, 2024 -
12 - 10A.I. ‐ Humanity's Final Invention? Aug 06, 2024 -
12 - 11Fever Feels Horrible, but is Actually Awesome! Aug 13, 2024 -
12 - 12We Traveled Back in Time. Now Physicists Are Angry. Aug 27, 2024 -
12 - 13We Need to Rethink Exercise (Updated Version) Sep 12, 2024 -
12 - 14Why Scientists Are Puzzled By This Virus Sep 17, 2024 -
12 - 15This Video Might Save 58 Lives Next Week Sep 24, 2024 -
12 - 16There Is Something Hiding Inside Earth Oct 03, 2024 -
12 - 17Tired of Doomscrolling? Oct 08, 2024 -
12 - 18We Fell For The Oldest Lie On The Internet Oct 29, 2024 -
12 - 19The Most Insane Weapon You Never Heard About Nov 05, 2024 -
12 - 20We Have To Talk About Weed Nov 12, 2024 -
12 - 21Vaping Is Too Good To Be True Nov 19, 2024 -
12 - 22Black Hole's Evil Twin - Gravastars Explained Dec 03, 2024 -
12 - 23Is The World Getting More Violent? Dec 10, 2024 -
12 - 24The Real Reason Why You Have Allergies Dec 12, 2024
11
Season 11 Feb 14, 2023
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11 - 1The Most Complex Language in the World Feb 14, 2023 -
11 - 2What Actually Happens When You Are Sick Feb 28, 2023 -
11 - 3How We Make Money on YouTube with 20M Subs Mar 28, 2023 -
11 - 4Why Aliens Might Already Be On Their Way To Us Apr 11, 2023 -
11 - 5Your Body Killed Cancer 5 Minutes Ago May 09, 2023 -
11 - 6The Black Hole That Kills Galaxies Jun 11, 2023 -
11 - 7The Reason Why Cancer is so Hard to Beat Jun 18, 2023 -
11 - 8The Most Dangerous Weapon Is NOT Nuclear Jul 02, 2023 -
11 - 9The (Second) Most Deadliest Virus on Earth Aug 08, 2023 -
11 - 10What Happens If You Destroy A Black Hole? Aug 16, 2023 -
11 - 11How A Nuclear War Will Start - Minute by Minute Aug 22, 2023 -
11 - 12We Did The Math - You Are Dead! Sep 12, 2023 -
11 - 13Why Korea is Dying Out Oct 04, 2023 -
11 - 14Ancient Life as Old as the Universe Oct 10, 2023 -
11 - 154.5 Billion Years in 1 Hour Oct 11, 2023 -
11 - 16How to Win an Interstellar War Oct 15, 2023 -
11 - 17The Last Thing To Ever Happen In The Universe Nov 21, 2023 -
11 - 18The Internet is Worse Than Ever – Now What? Nov 29, 2023 -
11 - 19How To Destroy The Universe Dec 08, 2023 -
11 - 20Your Tattoo is INSIDE Your Immune System. Literally Dec 12, 2023 -
11 - 21You Are The Center of The Universe (Literally) Dec 17, 2023
10
Season 10 Feb 08, 2022
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10 - 1What Happens if the Moon Crashes into Earth? Feb 08, 2022 -
10 - 2Are There Lost Alien Civilizations in Our Past? Mar 01, 2022 -
10 - 3We WILL Fix Climate Change! Apr 05, 2022 -
10 - 4The Most Horrible Parasite: Brain Eating Amoeba May 03, 2022 -
10 - 5You Are Not Where You Think You Are May 17, 2022 -
10 - 6Change Your Life - One Tiny Step at a Time Jun 07, 2022 -
10 - 7The Last Human - A Glimpse Into The Far Future Jun 28, 2022 -
10 - 8The Deadliest Virus on Earth Jul 26, 2022 -
10 - 9Is Civilization on the Brink of Collapse? Aug 16, 2022 -
10 - 10Why You Are Lonely and How to Make Friends Sep 06, 2022 -
10 - 11 -
10 - 12What Happens if a Supervolcano Blows Up? Oct 18, 2022 -
10 - 13Why Don't We Shoot Nuclear Waste Into Space? Nov 08, 2022 -
10 - 14The Most Extreme Explosion in the Universe Nov 23, 2022 -
10 - 15The Horror of the Slaver Ant Dec 06, 2022 -
10 - 16How To Terraform Mars - WITH LASERS Dec 11, 2022 -
10 - 17Black Hole Star – The Star That Shouldn't Exist Dec 15, 2022
9
Season 9 Feb 02, 2021
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9 - 1 -
9 - 2 -
9 - 3Do we Need Nuclear Energy to Stop Climate Change? Apr 13, 2021 -
9 - 4The Ultimate Guide to Black Holes Apr 27, 2021 -
9 - 5 -
9 - 6What Are You Doing With Your Life? The Tail End May 25, 2021 -
9 - 7The Day the Dinosaurs Died – Minute by Minute Jun 15, 2021 -
9 - 8How To Terraform Venus (Quickly) Jul 06, 2021 -
9 - 9 -
9 - 10How The Immune System ACTUALLY Works – IMMUNE Aug 10, 2021 -
9 - 11This Virus Shouldn't Exist (But it Does) Aug 31, 2021 -
9 - 12Can YOU Fix Climate Change? Sep 22, 2021 -
9 - 13What Dinosaurs ACTUALLY Looked Like? Oct 12, 2021 -
9 - 14You Are Immune Against Every Disease Nov 02, 2021 -
9 - 15Is Meat Really that Bad? Nov 30, 2021 -
9 - 16...And We'll Do it Again Dec 07, 2021 -
9 - 17Why We Should NOT Look For Aliens - The Dark Forest Dec 14, 2021
8
Season 8 Jan 26, 2020
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8 - 1Milk. White Poison or Healthy Drink? Jan 26, 2020 -
8 - 2How to Make a Kurzgesagt Video in 1200 Hours Feb 16, 2020
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8 - 3Why Blue Whales Don't Get Cancer - Peto's Paradox Mar 01, 2020 -
8 - 4The Coronavirus Explained & What You Should Do Mar 19, 2020 -
8 - 5Why Are You Alive – Life, Energy & ATP May 10, 2020 -
8 - 6
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8 - 7 -
8 - 8
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8 - 9What Is Intelligence? Where Does it Begin? Jul 12, 2020 -
8 - 10 -
8 - 11Unlimited Resources From Space – Asteroid Mining Aug 16, 2020 -
8 - 12The Warrior Kingdoms of the Weaver Ant Aug 30, 2020 -
8 - 13The Largest Star in the Universe – Size Comparison Sep 22, 2020 -
8 - 14
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8 - 15When Time Became History - The Human Era Oct 06, 2020 -
8 - 16Geoengineering: A Horrible Idea We Might Have to Do Oct 27, 2020 -
8 - 17How Large Can a Bacteria get? Life & Size 3 Nov 10, 2020 -
8 - 18 -
8 - 19Can You Upload Your Mind & Live Forever? Dec 10, 2020 -
8 - 20What if We Nuke the Moon? Dec 15, 2020
7
Season 7 Jan 13, 2019
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7 - 1 -
7 - 2 -
7 - 3Loneliness Feb 17, 2019 -
7 - 4 -
7 - 5What If We Detonated All Nuclear Bombs at Once? Mar 31, 2019 -
7 - 6 -
7 - 7The Side Effects of Vaccines — How High Is the Risk? May 12, 2019 -
7 - 8Is the EU Democratic? Does Your Vote Matter? May 19, 2019 -
7 - 9Is Meat Bad for You? Is Meat Unhealthy? Jun 09, 2019 -
7 - 10Could Your Phone Hurt You? Electromagnetic Pollution Jul 07, 2019 -
7 - 11Tiny Bombs in Your Blood — The Complement System Jul 28, 2019 -
7 - 12The World War of the Ants — The Army Ant Aug 11, 2019 -
7 - 13The Egg — A Short Story Sep 01, 2019 -
7 - 14 -
7 - 15 -
7 - 16What If We Nuke a City? Oct 13, 2019 -
7 - 17 -
7 - 181,000 km Cable to the Stars — The Skyhook Nov 17, 2019 -
7 - 19An Antidote to Dissatisfaction Dec 08, 2019 -
7 - 20Overpopulation & Africa Dec 15, 2019
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7 - 21How to Move the Sun: Stellar Engines Dec 22, 2019
6
Season 6 Feb 01, 2018
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6 - 1Why Alien Life Would Be Our Doom — The Great Filter Feb 01, 2018 -
6 - 2 -
6 - 3 -
6 - 4 -
6 - 5 -
6 - 6The Black Hole Bomb and Black Hole Civilizations Apr 22, 2018 -
6 - 7 -
6 - 8 -
6 - 9 -
6 - 10 -
6 - 11Wormholes Explained — Breaking Spacetime Aug 12, 2018 -
6 - 12 -
6 - 13Why Meat Is the Best Worst Thing in the World Sep 30, 2018 -
6 - 14 -
6 - 15End of Space — Creating a Prison for Humanity Nov 25, 2018 -
6 - 16 -
6 - 17Aliens Under the Ice — Life on Rogue Planets Dec 27, 2018 -
6 - 18Episode 18 Jan 01, 1970
5
Season 5 Feb 01, 2017
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5 - 1Why Earth Is a Prison and How to Escape It Feb 01, 2017 -
5 - 2 -
5 - 3Are GMOs Good or Bad? Genetic Engineering & Our Food Mar 30, 2017 -
5 - 4Is the European Union Worth It or Should We End It? Apr 13, 2017 -
5 - 5 -
5 - 6
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5 - 7Optimistic Nihilism Jul 26, 2017 -
5 - 8 -
5 - 9 -
5 - 10What Happens If We Bring the Sun to Earth? Sep 07, 2017
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5 - 11Is Reality Real? The Simulation Argument Sep 21, 2017
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5 - 12How Bacteria Rule Over Your Body — The Microbiome Oct 05, 2017 -
5 - 13Why Age? Should We End Aging Forever? Oct 20, 2017 -
5 - 14How to Cure Aging — During Your Lifetime? Nov 03, 2017 -
5 - 15Emergence — How Stupid Things Become Smart Together Nov 16, 2017 -
5 - 16 -
5 - 17
4
Season 4 Jan 31, 2016
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4 - 1The Last Star in the Universe — Red Dwarfs Explained Jan 31, 2016 -
4 - 2Why the War on Drugs Is a Huge Failure Mar 01, 2016 -
4 - 3The Antibiotic Apocalypse Explained Mar 16, 2016 -
4 - 4
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4 - 5Safe and Sorry — Terrorism & Mass Surveillance Apr 14, 2016
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4 - 6How Far Can We Go? Limits of Humanity (old version) May 12, 2016
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4 - 7What Are You? May 31, 2016 -
4 - 8What Happened Before History? Human Origins Jun 23, 2016 -
4 - 9Death From Space — Gamma-Ray Bursts Explained Jul 31, 2016 -
4 - 10 -
4 - 11
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4 - 12 -
4 - 13Fusion Energy Explained — Future or Failure Nov 10, 2016 -
4 - 14 -
4 - 15A New History for Humanity — The Human Era Dec 07, 2016 -
4 - 16Overpopulation — The Human Explosion Explained Dec 22, 2016
3
Season 3 Jan 20, 2015
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3 - 1How Small Is an Atom? (Spoiler: Very Small) Jan 20, 2015 -
3 - 2Measles Explained — Vaccinate or Not? Feb 24, 2015 -
3 - 3Banking Explained — Money and Credit Mar 12, 2015 -
3 - 4Nuclear Energy Explained: How Does It Work? (1/3) Mar 26, 2015 -
3 - 53 Reasons Why Nuclear Energy Is Terrible! (2/3) Apr 01, 2015 -
3 - 63 Reasons Why Nuclear Energy Is Awesome! (3/3) Apr 01, 2015 -
3 - 7The Fermi Paradox — Where Are All the Aliens? May 06, 2015 -
3 - 8The Fermi Paradox II — Solutions and Ideas Jun 04, 2015 -
3 - 9 -
3 - 10What if There Was a Black Hole in Your Pocket? Jul 16, 2015 -
3 - 11What Is Dark Matter and Dark Energy? Aug 06, 2015 -
3 - 12The European Refugee Crisis and Syria Explained Sep 01, 2015 -
3 - 13Addiction Oct 01, 2015 -
3 - 14What Is Light? Oct 15, 2015 -
3 - 15How Facebook Is Stealing Billions of Views Nov 10, 2015
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3 - 16
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3 - 17Black Holes Explained — From Birth to Death Dec 15, 2015
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3 - 18What Is Something? Dec 23, 2015
2
Season 2 Feb 03, 2014
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2 - 1Three Ways to Destroy the Universe Feb 03, 2014 -
2 - 2The Beginning of Everything — The Big Bang Mar 03, 2014 -
2 - 3Who Invented the Internet? And Why? Apr 10, 2014 -
2 - 4How Big Is the Moon? (MM#1) May 05, 2014 -
2 - 5The Moons of Mars Explained — Phobos & Deimos (MM#2) May 14, 2014 -
2 - 6How to Catch a Dwarf Planet — Triton (MM#3) May 26, 2014 -
2 - 7Are You Alone? (In the Universe) Jun 02, 2014 -
2 - 8Iraq Explained — ISIS, Syria and War Jun 19, 2014 -
2 - 9The Immune System Explained I — Bacteria Infection Jul 01, 2014 -
2 - 10Everything You Need to Know About Planet Earth Aug 04, 2014 -
2 - 11Atoms as Big as Mountains — Neutron Stars Explained Sep 03, 2014 -
2 - 12Is War Over? — A Paradox Explained Oct 09, 2014 -
2 - 13 -
2 - 14What Is Life? Is Death Real? Dec 14, 2014 -
2 - 15The Ultimate Conspiracy Debunker Dec 18, 2014
1
Season 1 Jul 11, 2013
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1 - 1How Evolution Works Jul 11, 2013 -
1 - 2The Solar System — Our Home in Space Aug 22, 2013 -
1 - 3Fracking Explained: Opportunity or Danger Sep 03, 2013 -
1 - 4The Gulf Stream Explained Oct 11, 2013 -
1 - 5How the Stock Exchange Works (For Dummies) Nov 23, 2013 -
1 - 6The History and Future of Everything — Time Dec 19, 2013
0
Season 0 Apr 23, 2014
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0 - 1Help Us Make More Videos for Kurzgesagt Apr 23, 2014
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0 - 2
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0 - 3
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0 - 4Can You Trust Kurzgesagt Videos? Mar 03, 2019 -
0 - 5The 12,020 Human SPACE Era Calendar Nov 03, 2019
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0 - 6The 12,021 Human Era Calendar Oct 11, 2020
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0 - 7Two Chapters From Our New Book – Exclusive Preview! Sep 28, 2021 -
0 - 8
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0 - 9HIDDEN WORLDS - Limited Edition Calendar! Oct 11, 2022
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0 - 10Our Very First Merch Drop – Cosmic Pioneers Edition Apr 16, 2023
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0 - 11Why Is the Ocean Salty and Rivers Are Not? May 04, 2023 -
0 - 12How Tiny Can a Black Hole Be? May 11, 2023 -
0 - 13The Ultimate Fight: Tardigrade vs. Bird May 14, 2023 -
0 - 14Magnetic Pole Shift - A Doomsday Scenario? May 18, 2023 -
0 - 15How to Cut a Sandwich Perfectly – With Science May 25, 2023 -
0 - 16Earth as a Cube – What Would It Look Like? Jun 01, 2023 -
0 - 17How do Lasers Work? Jun 08, 2023 -
0 - 18Let's Make Earth Twice as Large! Jun 02, 2023 -
0 - 19Are Your Friends More Popular than You? Jun 29, 2023 -
0 - 20 -
0 - 21What Happens if Earth Suddenly Stops Rotating? Jul 13, 2023 -
0 - 22What If You’re in Space without a Spacesuit? Jul 20, 2023 -
0 - 23How Many Moons Could Earth Handle? Jul 27, 2023 -
0 - 24A Glimpse Into Our Future Oct 17, 2023 -
0 - 25The Moment Kurzgesagt Changed Forever Dec 05, 2023 -
0 - 26Would You Choose Life On Earth Or in Space? Sep 21, 2023
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0 - 27Cooking a Chicken in a Particle Accelerator Dec 28, 2023
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0 - 28You Swallowed a Tapeworm – What Now? Jan 04, 2023
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0 - 29Let’s Shrink Earth to Half Its Size Jan 11, 2023
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0 - 30
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0 - 31What If Our Sun Disappeared? Jan 25, 2023
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0 - 32Can You Escape a Black Hole? Feb 08, 2023
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0 - 33Something in Your Kitchen Emits Antimatter Feb 15, 2023
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0 - 34What Does the Moon Smell Like? Feb 29, 2024
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0 - 35Will Europe Freeze over When the Gulf Stream Stops? Mar 07, 2024
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0 - 36AI Can Literally Lend You a Hand Mar 14, 2024
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0 - 37YOU Own the Moon. And Mars. And Venus. Mar 21, 2024
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0 - 38ONE Gene Determines How Many Fingers You Have Apr 04, 2024
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0 - 39Let's Cook a Galaxy Apr 11, 2024
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0 - 40How You Can Live Forever... Maybe. Apr 25, 2024
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0 - 41
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0 - 42Why Is the Night Sky Black? May 16, 2024
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0 - 43Your Hidden Superpower May 28, 2024
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0 - 44How Old Can You Get? May 30, 2024
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0 - 45Something Travels Faster than Light Jun 06, 2024
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0 - 46We Are Making a VIDEO GAME Jun 09, 2024
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0 - 47Our Brains Are Not Special. But Why Are We? Jun 20, 2024
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0 - 48The Deadly Power of a Coin-Sized Black Hole Jul 04, 2024
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0 - 49Can We Stop the Extinction? Jul 11, 2024
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0 - 50Can Our Universe Destroy Itself? Jul 25, 2024
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0 - 51The Sun is NOT Yellow! Aug 01, 2024
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0 - 52Fentanyl Explained Aug 22, 2024
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0 - 53This Happens When You Get a Tattoo Aug 29, 2024
Overview
Time travel is possible. In fact, you’ve been doing it since the day you were born. But what if we told you there’s a way to hack the universe and manipulate time itself? We just have to do two simple things to make it happen: 1. Make a lot of physicists grumpy. 2. Shoot one twin through space against their will, while the other chills on Earth. Let's go!
Year 2025
Studio YouTube
Director Philipp Dettmer
Crew
Popularity 2.7689
Language English
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