The leak of 21,000 tonnes of diesel into rivers and subsoil from a rusty-looking storage tank at mining firm Nornickel's power plant in Siberia angered President Vladimir Putin.
The London Metal Exchange, the world's biggest industrial metals market, has rejected calls to create a separate contract for low-carbon aluminum and instead plans to create a digital register this year.
Nanometer-sized metal struts that form nested networks on separate hierarchical levels demonstrated to provide great strength while remaining ultralight.
The mad surge in the copper price took even ardent bulls by surprise, but doubts are beginning to creep in about the sustainability of the rally, at least in the short term.