Comprehensible input in English

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The number on each thumbnail is its difficulty score out of 100: mostly speaking pace, partly vocabulary load. How it is measured →

58/10037:43Biomedical Scientist Answers New Pseudoscience Questions | Tech Support | WIREDC1-C2 · ~14,000 words · mediumWIRED58/10021:22NASA'S Plutonium ProblemC1-C2 · ~13,000 words · mediumReal Engineering58/10032:22Biomedical Scientist Answers More Pseudoscience Questions | Tech Support | WIREDC1-C2 · ~16,000 words · mediumWIRED58/1005:00Why you feel stuck — and how to get motivated - Shannon OdellB2-C2 · ~9,000 words · mediumTED-Ed58/1009:20This Gorgeous Rock Was Made by a SupercontinentC1-C2 · ~20,000 words · mediumSciShow58/10021:40Volcanologist Answers Volcano Questions From Twitter | Tech Support | WIREDB2-C2 · ~12,000 words · mediumWIRED59/1005:07Kiranmala: The tale of the princess who conquered Magic Mountain - Malay BeraB2-C2 · ~8,000 words · mediumTED-Ed59/10017:06California’s Tallest Bridge Has Nothing UnderneathB2-C2 · ~11,000 words · mediumPractical Engineering59/10018:11How NASA Reinvented the Rocket EngineC1-C2 · ~12,000 words · mediumReal Engineering59/10030:05Induction lamps: fluorescent lighting's final formC1-C2 · ~13,000 words · mediumTechnology Connections59/1005:20Are there really dead wasps in figs? - Carolyn BeansC1-C2 · ~12,000 words · mediumTED-Ed59/10018:09Starship Reached Space. What Now?C1-C2 · ~12,000 words · mediumReal Engineering59/10011:40King Tut’s Curse Could Cure CancerC1-C2 · ~10,000 words · mediumSciShow59/1004:56Are you more likely to explode or freeze in space? - Tejal GalaC1-C2 · ~12,000 words · mediumTED-Ed60/10017:35When Kitty Litter Caused a Nuclear CatastropheC1-C2 · ~10,000 words · mediumPractical Engineering60/1005:13What are warts — and how do you get rid of them? - Cella WrightC1-C2 · ~13,000 words · mediumTED-Ed60/10015:59AUTOIs Africa the Next China?C1-C2 · ~12,000 words · mediumWendover Productions60/10015:18The World's Largest Emerald Shouldn't ExistC1-C2 · ~10,000 words · mediumSciShow60/10017:49The Insane Engineering of the GameboyC1-C2 · ~12,000 words · mediumReal Engineering60/10019:27The Insane Engineering of the ThunderscreechC1-C2 · ~11,000 words · mediumReal Engineering60/1004:18Why does hitting your funny bone feel so horrible? - Cella WrightC1-C2 · ~20,000 words · mediumTED-Ed60/10017:22How Japan's Maglev Train WorksC1-C2 · ~10,000 words · mediumReal Engineering60/10021:09AUTOSaudi Arabia's Oil ProblemC1-C2 · ~14,000 words · mediumWendover Productions60/1005:05How do fireflies create light? - Emily A. GeestC1-C2 · ~12,000 words · mediumTED-Ed

Which English channel to start with

Ranked by median difficulty, easiest first. The bar is a range, not a label — a channel typically spans a wide stretch of the scale, so one level would be false for its own hardest videos.

3 of these 4 channels carry the same vocabulary band (B1-B2), and their scores still run from 0 to 86. That gap is pace: what separates the easiest of these channels from the hardest is how fast people talk, not which words they use. How that is measured →