Hard rock minerals like gold, silver, copper and lithium on public lands belong to the American public, but under a 150-year-old law, the US gives them away for free.
Iron fights anemia. Bismuth relieves gastric problems. Lithium acts against depression and gold can treat rheumatoid arthritis. Metals are precious tools for good health.
Technical advances are reducing the volume of e-waste generated in the US as lighter, more compact products enter the market. But those goods can be harder to reuse and recycle.
Many socks, towels and other textiles are treated with silver nanoparticles to kill germs and odors. When the silver washes out, it can pollute waterways. Two chemists propose a way to collect it from wastewater.
Joint replacement surgery comes with a big risk of infection. New implant technology that can release silver ions inside the body could help – and without increasing antibiotic resistance.
The use of silver in medicine is as old as western medicine itself. Hippocrates is known to have used it to treat ulcers and wounds, the Romans almost certainly knew of its healing properties, its use…
Safe haven investments are investments that provide a low level of risk during periods of extreme economic uncertainty. The problem is that a safe haven investment is a safe haven investment until it is…
Chercheur au Centre d’histoire culturelle des sociétés contemporaines, Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) – Université Paris-Saclay