"Most of what we send into outer space never comes back," says astrodynamicist and TED Fellow Moriba Jah. In this forward-thinking talk, Jah describes the space highways orbiting earth and how they're mostly populated by space junk. Learn more about his quest to develop and scale the world's first crowdsourced space traffic monitoring system -- ...

The world's telecommunications needs are dependent on the satellite infrastructure we've placed in orbit but what are we doing to protect it? Not a lot, according to space environmentalist Moriba Jah. In this eye-opening talk, he draws attention to the overcrowding of orbital space and suggests a few fixes that could prevent the traffic jam from...

What would happen if one day all of humanity's artificial satellites suddenly disappeared? Within hours, most of the planet's traffic would grind to a halt, the world economy would shut down, and most countries would declare a state of emergency. Even in the best-case scenario, our civilization would be set back by decades. So, what are the odds...

From health-tracking wearables to smartphones and beyond, data collection and computer modeling have become a ubiquitous part of everyday life. Advancements in these areas have given birth to "digital twins," or virtual models that evolve alongside real-world data. Aerospace engineer Karen Willcox explores the incredible possibilities these syst...