A Canadian mining startup says metal-rich rocks on the seafloor can help power the switch away from fossil fuels. Critics say mining them could cause ecological destruction, but no one knows exactly what the impact will be yet. MORE BIG BUSINESS VIDEOS: 10 Car Jobs You Never Knew Existed | Big Business | Insider Business youtube.com/watch?v=DmP4pcMGL1w Big Business Marathon 2022 | Big Business | Insider Business youtube.com/watch?v=o9kMAEyjpQI Why It Costs $1 Million Per Day To Run One Of The World’s Biggest Cruise Ships | Big Business youtube.com/watch?v=VYN7LR2gwso ------------------------------------------------------ #ElectricCars #BigBusiness #InsiderBusiness Business Insider tells you all you need to know about business, finance, tech, retail, and more. Visit our homepage for the top stories of the day: businessinsider.com Insider Business on Facebook: facebook.com/businessinsider Insider Business on Instagram: http...