Autonomous vehicles are increasingly sophisticated defensive tools for ports wanting to protect against maritime threats - including attacks from other autonomous vehicles.In December 15 last year, the Security Service of Ukraine reported that its underwater drone had struck a Russian submarine in Novorossiysk. The incident highlighted just how sophisticated potential threats have become.
Microwave-based method to upcycle old lithium-ion cathodesInstead of letting old lithium-ion batteries pile up as waste, Sandia National Laboratories researchers have developed a microwave-based process to recover and remake their cathodes, potentially turning spent batteries into a new domestic source of critical materials.