Precious metals in peril: Can asteroid mining save us?
by Andy Greenspon Have you ever wondered how much gold remains to be mined on Earth? How about the lesser-known element indium, essential to computer and smartphone displays? Known sources of some metals could be depleted in as little as 20 to 30 years, especially the rarest ones necessary to construct computers, smartphones, and other advanced technologies. While some elements can be substituted for others, … Continue reading Precious metals in peril: Can asteroid mining save us?