Solve staffing issues and giving hard of hearing the opportunity of front of house hospitality.Our corporate office café has introduced sign language screens showing staff how to place our coffee order in sign language.  This was introduced when the café recruited a range of new staff members, many who are hard of hearing.  My favourite order is cappuccino which has a movement reminiscent to Peter Allen with the maracas.A separate example is here: https://www.horecatrends.com/en/hutten-and-the-sign-language-coffee-bar-join-forces-in-the-netherlands/

ZeroAvia is a developer of zero-emission powertrain for commercial air travel.  In September they made their first test flight in Cranfield in the UK using a 6-seater hydrogen-fueled aircraft for taxiing, taking off, circling and landing.  ZeroAvia’s first commercial product will be the powertrain for 20-seater planes and aims to demonstrate that it can fly a plane over 800km with as many as 20 seats by 2023. They want to scale up to 1,600km with over 100 seats by 2030.   Aviation is a challenging industry to decarbonise and will increasingly contribute to unwanted carbon emissions.