IATA: “Now or Never” for Single European Sky

https://www.iata.org/en/pressroom/pr/2021-04-20-02/ 

Navy Tests UAVs And USVs | Saudi Arabia Upgrades F-15 ESTS | Boeing Tapped For Japanese KC-46 Support

https://www.defenseindustrydaily.com/navy-tests-uavs-and-usvs-saudi-arabia-upgrades-f-15-ests-boeing-tapped-for-japanese-kc-46-support-045531/ 

Rex’s Sharp says ‘desperate’ Qantas is ‘technically insolvent’

https://australianaviation.com.au/2021/04/rexs-sharp-says-desperate-qantas-is-technically-insolvent/ 

EBAA Holds First Sustainable Aviation Fuel Summit

https://www.ainonline.com/aviation-news/business-aviation/2021-04-20/ebaa-holds-first-sustainable-aviation-fuel-summit 

Eurocontrol Outlines Means to Cut CO2 by 25 percent by 2030

https://www.ainonline.com/aviation-news/air-transport/2021-04-20/eurocontrol-outlines-means-cut-co2-25-percent-2030 

Metal waste turned into versatile aerogels in eco-friendly way

https://newatlas.com/materials/versatile-aerogels-upcycled-metal-waste/ 

Airbus pioneers a superconducting powertrain cooled by liquid hydrogen

https://newatlas.com/aircraft/airbus-liquid-hydrogen-cryogenic-superconductivity/