Home News UK: Have We Reached the ‘Tipping Point’ for Government Investment in Sustainable... UK: Have We Reached the ‘Tipping Point’ for Government Investment in Sustainable Aviation? 25 Jun 2020 | News Have We Reached the ‘Tipping Point’ for Government Investment in Sustainable Aviation? – Aviation Today Governments on both sides of the Atlantic are investing heavily to ensure they are competitive in future sustainable aviation technologies.