A team from Australia’s James Cook University has synthesized “freestanding” graphene using non-toxic and renewable tangerine peel oil that can reportedly be used for the recovery of silver from ...

“This technique, previously reported in the literature, enables the recovery of highly pure silver metal from hydrometallurgical leachate containing copper ions,” the team explained. The best ...

Find includes 1,200 bars of silver bullion. July 18, 2012— -- An American company has made what is being called the heaviest and deepest recovery of precious metals from a shipwreck. The Tampa, ...

Every year, we toss out 152 million mobile phones, 52 million computers, and 36 million monitors. That’s a massive ecological problem — but it’s also a massive revenue opportunity. Because each year, ...

Researchers at the Georgia Institute of Technology have demonstrated a new type of nanometer-scale optoelectronic device that performs addition and other complex logic operations, is simple to ...