| 301. | Geek Week | Is time travel possible? | Sci Guide (Ep 31) | Head Squeeze | 106,106 | Guide |
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| 302. | Coffee Without Caffeine | Greg Foot | Earth Lab | 105,586 | |
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| 303. | Precision Drone Flying Around An Erupting Volcano (Pt. 1) | BBC Earth Science | 105,359 | |
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| 304. | Can You Spontaneously Combust? | Earth Lab | 105,244 | |
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| 305. | What are my mathematical birthdays? | Head Squeeze | 105,195 | |
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| 306. | Making A REAL Hoverboard | Factomania | Earth Lab | 104,446 | |
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| 307. | Playing with fire | Head Squeeze | 103,565 | |
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| 308. | Can Drugs Make You Smarter? | Earth Lab | 103,354 | |
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| 309. | How Did Gold Get To Earth? | Colour: The Spectrum of Science | BBC Earth Science | 102,029 | |
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| 310. | How To Stop Snoring | Earth Lab | 100,784 | Guide |
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| 311. | Is Decaf Coffee Healthier? | Earth Lab | 100,737 | |
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| 312. | How to Identify and Treat Heat Stroke | Earth Lab | 100,659 | Guide |
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| 313. | Do Diet Drinks Make You FAT? | Earth Lab | 100,594 | |
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| 314. | How to Create Sugar Crystals | Bang Goes The Theory | Earth Lab | 100,295 | Guide |
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| 315. | Awesome Tabletop Science Tricks | Live Experiments | Head Squeeze | 99,896 | |
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| 316. | Are Shampoos and Moisturisers Bad for Your Skin? | Earth Lab | 99,826 | |
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| 317. | Extreme Temperature: A New World Of Scientific Possibility | BBC Earth Science | 99,307 | |
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| 318. | James May Is NOT A Whovian! | Earth Lab | 99,304 | |
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| 319. | What are armpits for? | Greg Foot | Ask Head Squeeze | 98,816 | |
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| 320. | What Is The Strongest Material? | Earth Lab | 98,485 | |
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| 321. | Are We Living In A Simulation? | Earth Lab | 98,381 | | The Messenger
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| 322. | Which is best: lighter bike or leaner body? (With GCN) | Greg Answers (Ep 8) | Head Squeeze | 98,366 | |
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| 323. | How Does A Submarine Work? | Blue Planet II | Earth Lab | 98,284 | |
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| 324. | James May Admits Trains Are Better Than Cars! | Earth Lab | 97,751 | |
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| 325. | How Does Blood Donation Work? | Earth Lab | 97,538 | |
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| 326. | Bed Bug's Bite - Up Close! | Earth Lab | 97,182 | |
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| 327. | The Hidden Dangers Of Card Payment Technology | BBC Earth Science | 97,089 | |
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| 328. | How Giant Fungal Spikes Dominated Our Landscape | Ancient Earth | Earth Lab | 96,476 | |
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| 329. | Alexander Graham Bell's Telephone Prototype | The Genius Of Invention | Earth Lab | 96,285 | |
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| 330. | What Exactly Killed The Dinosaurs? | Earth | BBC Earth Lab | 95,505 | |
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| 331. | Swallowing Tape Worm Eggs! | Earth Lab | 94,527 | |
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| 332. | Is There Proof Aliens Exist? | Earth Lab | 93,018 | |
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| 333. | Vsauce Special EXTRAS: What is a one-buttocked experience? | James May's Q&A (Ep 22) | Head Squeeze | 92,453 | |
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| 334. | The Illusion of Consciousness | Fractured Reality | BBC Earth Lab | 92,150 | Vlog |
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| 335. | The best of James May's Q&A as chosen by you Volume 2 | Head Squeeze | 91,752 | |
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| 336. | Why Am I Going Bald? | Earth Lab | 91,578 | |
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| 337. | Investigating the World's Elements | BBC Earth Science | 91,300 | |
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| 338. | Earth’s Extraordinary Light Show: The Northern Lights | Forces of Nature | BBC Science | 91,239 | Show |
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| 339. | Why Does Junk Food Taste SO GOOD? | Earth Lab | 91,210 | |
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| 340. | Win with science: The maths of successful teams | Head Squeeze | 91,166 | |
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| 341. | Will You Survive This Fall? | Earth Lab | 91,139 | |
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| 342. | What Makes James May Laugh | Earth Lab | 91,081 | |
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| 343. | Our Universe's Most Volatile Volcanoes | Volcanic | BBC Earth Lab | 90,603 | |
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| 344. | How the brace position can save your life | Plane Crashes #4 | Earth Lab | 89,744 | |
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| 345. | Bullet Proof Custard | Head Squeeze | 89,354 | |
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| 346. | Discover The Mysteries of the Human Brain | BBC Earth Science | 88,763 | |
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| 347. | Are Deodorants Dangerous? | Earth Lab | 88,674 | |
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| 348. | Precision Drone Flying Around An Erupting Volcano (Pt. 2) | BBC Earth Science | 88,289 | |
|
| 349. | How Does Light Bend? | Earth Lab | 88,021 | |
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| 350. | James May Prepares For Space Travel! | Earth Lab | 87,963 | |
|
| 351. | Inside a Nuclear Reactor Core | Earth Lab | 87,705 | |
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| 352. | Albertosaurus Matriarch Asserts Dominance | Walking with Dinosaurs | BBC Earth Science | 87,512 | | Walking with Dinosaurs
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| 353. | Creation Myths Vs Evolutionary Theory | James May's Q&A (Ep 24) EXTRAS | Head Squeeze | 87,430 | |
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| 354. | Does Fast Food Make You Fat? | Secrets of Everything | Earth Lab | 87,376 | |
|
| 355. | James May LOVES Airships! | Earth Lab | 87,023 | |
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| 356. | Test acids with home-made pH indicator | Live Experiments (Ep 35) | Head Squeeze | 86,988 | |
|
| 357. | The Beating Heart of an Aeroplane: Jet Engines | City in the Sky | BBC Earth Science | 86,772 | |
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| 358. | Is It Safe To Re-Heat Takeaways? | Earth Lab | 86,620 | |
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| 359. | Surfing The Ocean's Biggest Waves | BBC Earth Science | 86,170 | |
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| 360. | How Safe is Your Password? | Earth Lab | 85,996 | |
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| 361. | Can Three People Make A Baby? | Earth Lab | 85,966 | |
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| 362. | The Best of James May Q&A! | Earth Lab | 85,845 | |
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| 363. | The Effect Of Caffeine On Your Heart | Earth Lab | 85,052 | | Caffeine
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| 364. | The Largest Excavation in Human History | Generation Earth | BBC Earth Science | 84,976 | |
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| 365. | Count to a trillion on your fingers! | Head Squeeze | 84,695 | |
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| 366. | World's First 3D Scan of a Pliosaur | Attenborough and the Giant Sea Monster | BBC Earth Science | 84,687 | |
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| 367. | Does Sound Affect Taste? Try it yourself | Earth Lab | 83,985 | |
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| 368. | Can Adrenaline Make You Stronger? | Earth Lab | 83,635 | |
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| 369. | BLOOPERS! James May Gets Confused On Number Bases! | Earth Lab | 83,053 | |
|
| 370. | What are your chances of winning the EuroMillions? | Number Hub (Ep 2) | Head Squeeze | 82,517 | |
|
| 371. | Why do we close our eyes when we sneeze? | Greg Foot | Head Squeeze | 82,209 | |
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| 372. | Radar is pretty boring I James May Q&A Extras I Head Squeeze | 81,870 | |
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| 373. | Pluto's Dark Side Revealed | Planet Explorers | BBC Earth Lab | 81,007 | |
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| 374. | How to Make a Rocket | Earth Lab | 80,980 | Guide |
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| 375. | Did We INVENT Time? | BBC Earth Lab | 80,719 | |
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| 376. | The FUTURE Of TRAVEL: Hyperloop Trains And Hypersonic Jets | Earth Lab | 79,196 | |
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| 377. | ReGS – The Women Who Are Constantly Aroused | Earth Lab | 79,127 | |
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| 378. | Shrinking the Stomach: Gastric Bypass Surgery | Earth Lab | 78,774 | |
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| 379. | The Curious Case Of Typhoid Mary | Earth Lab | 78,208 | |
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| 380. | Why Am I Tired? | BRITLAB | 78,205 | |
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| 381. | Somebody Lived Without Food For Over A Year?! | Earth Lab | 78,014 | |
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| 382. | 40 Minutes Of Weird Science Theories | Full Series | BBC Earth Lab | 77,908 | |
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| 383. | Do You NEED Vitamin Supplements | Earth Lab | 77,779 | |
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| 384. | Are Probiotics Good for You? | Earth Lab | 77,559 | |
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| 385. | What Causes Cramp and How To Cure It | Earth Lab | 77,441 | Guide |
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| 386. | Do Cars Really EXPLODE On Impact? | Earth Lab | 77,311 | |
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| 387. | Sending A Probe Around The Sun | Universe Explorers | BBC Earth Lab | 75,693 | |
|
| 388. | Can we really build the Star Ship Enterprise? | Sci Guide (Ep 24) | Head Squeeze | 75,659 | Guide |
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| 389. | Is Exercise Good for My Brain? | Earth Lab | 75,658 | |
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| 390. | 5 Fascinating Missions in Space | Planet Explorers: Full Series | BBC Earth Science | 75,123 | |
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| 391. | The Antarctic Volcano, Where Ice Meets Lava | Volcanic | Earth Lab | 74,832 | |
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| 392. | Blue Planet II: Alucia Research Vessel Tour | Earth Lab | 74,595 | |
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| 393. | Eye Surgery: What is a Cataract? | Earth Lab | 73,966 | |
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| 394. | James May on penny-farthings | Extras | James May's Q&A (Ep 32) | Head Squeeze | 73,939 | |
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| 395. | What Is Dark Energy? | Space Mysteries | Earth Lab | 73,850 | |
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| 396. | Why Do We Get Hangovers? | Earth Lab | 73,752 | |
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| 397. | Extra Scenes! James May Explains Boomerangs | Earth Lab | 73,587 | |
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| 398. | Fish Poo and LED Lights. Is this the future of food?! | Living Off Grid with Maddie Moate | 73,388 | |
|
| 399. | How do you get to the ISS? | Sci Guide (Ep 22) | Head Squeeze | 72,889 | Guide |
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| 400. | Why do we have wisdom teeth? | Greg Foot Answers Your Questions (Ep 12) | Head Squeeze | 72,302 | |
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