Seen in the New Scientist journal and reported by the BBC's science editor some time ago. Bae systems (formally British Aerospace) are looking into 'Anti Gravity' for future aviation. It is called Project
Greenglow.
The boeing aircraft company have announced a similar project as have other companies in France, Canada, Japan and Russia.
Bae systems refused to confirm or deny if they were in collaboration
with another company/ country.
Some scientists have publicly ridiculed this research but others associated with it are keeping tight lipped.
Was it known about in 1980 but only now is it getting some publicity?
Observer