A TED Talk is a short, powerful presentation that shares a great idea in 18 minutes or less. These talks are delivered by experts from various fields such as science, technology, business, art, and design, aiming to inform, educate, and inspire a global audience with "Ideas Worth Spreading"

. TED Talks originated from TED, a nonprofit organization dedicated to spreading innovative and valuable knowledge through these concise talks. They are filmed at TED's flagship conferences, independent TEDx events, and other partner gatherings worldwide. The talks cover a broad range of topics beyond technology, entertainment, and design, including global issues, education, health, and more

. The format is designed to maintain audience engagement by keeping presentations brief and focused. TED Talks are carefully edited for clarity and impact without distorting the speaker's message. They are made freely available online with subtitles and transcripts, reaching millions of viewers globally each year

. In summary, a TED Talk is a well-crafted, accessible presentation of a novel or compelling idea, delivered in under 18 minutes, intended to spark curiosity, learning, and positive change