Here's a test question: What do the use of road navigation systems, global time consistency and the availability of accurate stock market data have in common? The answer is that everyone relies on working satellites. However, an increasing amount of environmentally harmful waste in space poses a risk to all of these services. For example, a Japanese company, Astroscale, was working on ways to remove space debris. The founder and CEO, Nobu Okada, explains.
Video by Adam Tyrrell and Pamela Parker
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