Polymetallic nodules, rich in minerals like manganese, cobalt, and nickel, are in high demand due to global electrification and China's market dominance. However, ecologists warn that mining these nodules could harm fragile deep-sea ecosystems, with recovery potentially taking decades. A study indicated that microbial communities might need 50 years to recover from mining impacts. Additionally, the nodules contribute to oxygen production, which could aid in extraterrestrial research. Concerns remain about the environmental impact of sediment plumes and the direct harm to deep-sea life from mining activities.
Key takeaways:
- The U.S. Department of the Interior is starting the process of selling deep-sea mining leases after a request from startup Impossible Metals.
- Impossible Metals has developed an underwater autonomous vehicle that collects polymetallic nodules with robotic claws, claiming it is less disruptive than competitors' methods.
- Polymetallic nodules contain high concentrations of critical minerals like manganese, iron, cobalt, nickel, and copper, which are in high demand as the world electrifies.
- Ecologists and oceanographers warn that deep-sea mining could disrupt fragile ecosystems, with potential long-term impacts on microbial communities and marine life.