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.
