I wouldn't worry too much by these reports.Firstly the title "Professor" now seems to extend to half the nation and often the same half who are engaged in "File and Forget" papers.
A scientific look at the problem would reveal the considerable decrease in individual aircraft noise over the last thirty years and the allied increase in engine efficiency leading to less polution. If those two changes were extrapolated, an optomist would be looking forward to near silent engines with virtually no polution by the year 2050.
The genie is out of the bottle. The average Brit has had air travel waived in his face and he likes it. Together we can make it possible and environmentally acceptable.
...and before anyone snipes...I live close to a major international airport.