Explore the profound questions that continue to elude humanity, from the existence of the multiverse to the Fermi Paradox, and discover the enduring allure of the unknown.
Explore how simple ideas and creative methods led to profound scientific discoveries, from Eratosthenes' calculation of Earth's circumference to Fizeau's measurement of the speed of light.
Explore the mysteries of the deep ocean, from volcanic eruptions to unique marine life, and discover why ocean exploration is crucial for our planet's future.
Discover TED-Ed's mission to amplify great educators' voices globally through animated videos. Learn how to nominate teachers, animators, or suggest lessons to spark curiosity and lifelong learning.