[Q&A] Smoking Gun Biosignatures, Dyson Spheres vs Warp Drives, Adopting the Metric System

Which evidence will be a definite smoking gun when it comes to finding extraterrestrial life? Why is a Dyson sphere more realistic than warp drives? Will America ever adopt the metric system? And in our Q&A+ version, will China be collaborating with other nations in space? Answering all these questions and more in this Q&A show. 🎁 [Q&A+] Same video. No YT ads. BONUS question, totally free : https://www.patreon.com/universetoday 🚀 [Overtime] Even more Q&As https://www.patreon.com/universetoday 00:00 Start 00:32 [Ross] What will be a sufficient enough evidence of life on another world? 06:07 [Mikael Biilmann] Will North America ever switch to the metric system? 08:11 [LeMonkDog] Why is a Dyson sphere considered more rational than FTL travel? 12:34 [ConspiracyTheoryEnthusiast] Are there any filters that help cope with light pollution? 📺 VIDEO VERSION https://youtu.be/Z31aWzrlOb0 📰 GUIDE TO SPACE Newsletter No ads. Subscribe for FREE: https://universetoday.com/newsletter 🎧 PODCASTS Universe Today: https://universetoday.fireside.fm/ Astronomy Cast: http://www.astronomycast.com/ 📩 CONTACT FRASER [email protected] ⚖️ LICENSE Creative Commons Attribution 4.0 International (CC BY 4.0)