Earth has an incredibly varied and ever-changing landscape—jagged mountains, arid deserts, lush rainforests, rolling wheat fields. Before NASA came on the scene, no one was keeping a systematic eye on the ground from above. NASA scientist Brad Doorn explains how one long-running satellite program collects the data farmers need to grow the crops that feed the ... Show More
Jun 2025
How Lying In Bed For 60 Days Helps Astronauts
In space, microgravity changes the body. Body fluids shift from the legs toward the head, the back of our eyes flatten, we lose muscle strength, our bones lose some of their density, and even the amount of blood pumped by the heart with each beat drops. To learn more about how mi ... Show More
27m 17s
Mar 2025
An extinction-level event for NASA science
<p>NASA's science missions have transformed our understanding of the Universe, from breathtaking images of deep space to robotic explorers on Mars. But now, a reported 50% cut to NASA's science budget threatens to shut down missions, halt discoveries, and devastate the future of ... Show More
1h 7m
Oct 24
How satellites are supporting farmers across Africa | Catherine Nakalembe
<p>More than 8,000 satellites orbit Earth, taking photos every day. Food security specialist and TED Fellow Catherine Nakalembe shows how she uses this imagery to help smallholder farmers across Africa prepare for floods, droughts and crop failures. Learn why real innovation isn’ ... Show More
33m 38s