In order to provide the public with a more complete and reliable interpretation of real-time air pollution levels, using the WHO’s Air Quality Guidelines, The University of Hong Kong together with Civic Exchange revised the Hedley Environmental Index and launched a new version based on an updated methodology and a more user-friendly design for easy understanding and sharing. Hedley Environmental Index was first launched in 2008. It monitors and publishes in real-time the economic costs of Hong Kong’s air pollution in terms of public health impacts (premature deaths, hospital bed-days and doctor visits) and their monetary value.   [Hedley Enironmental Index]  

1. 21 Mar 2012 – Bloomberg – Hong Kong as Dirtiest Global Financial Center Is Tsang’s Legacy (Hong Kong)
2. 17 Jan 2012 – ATV Home news - 港大公布新修訂空氣污染指標「達利指數」
3. 17 Jan 2012 – Bloomberg – Hong Kong Says Air Quality Objectives to Take Start 2014
4. 17 Jan 2012 – Commercial Radio – 港大醫學院批評政府空氣污染指數過時 (11:20)
5. 17 Jan 2012 – Metro Radio – 本地 -港大促環保署按世衛標準更新空污指數 (14:02)
6. 17 Jan 2012 – RTHK1 – 港大批評環保署空氣污染指數過時粗疏 (12:39)
7. 17 Jan 2012 – RTHK1 – 自由風自由 PHONE – 行會通過更新的空氣質素指標 環境局將推措施改善空氣質素 (47.42”-54.00″)
8. 17 Jan 2012 – RTHK3 – News – Public ‘misled by primitive air checks’
9. 17 Jan 2012 – RTHK3 – Newswrap – (8.09”-13.30”)
10. 17 Jan 2012 – The China Post – Beijing’s pollution policy sets pace for smoggy Hong Kong: think tank    
11. 17 Jan 2012 – The Wall Street Journal – Hong Kong Unveils Pollution Objectives
12. 17 Jan 2012 – TVB Jade 6.00pm news – 港學表示空氣質素不符合世衛標準
13. 17 Jan 2012 – Wolrd Asthma Foundation – Hong Kong Says Air Quality Objectives to Take Start 2014
14. 18 Jan 2012 – am730 (M02) – 收緊空氣質素指標 沿用25年終更新  
15. 18 Jan 2012 – Apple Daily (A06) – 性命攸關　污氣每年害死3200人
16. 18 Jan 2012 – Business News – Pollution hits Hong Kong health, economy
17. 18 Jan 2012 – Cable TV – 團體斥新空氣質素指標仍落後
18. 18 Jan 2012 – CNN – Pollution hits Hong Kong health, economy [ text | video ]
19. 18 Jan 2012 – Headline Dailly (P02) - 污染嚴重 每年3200人提早死亡
20. 18 Jan 2012 – Headline Daily – 未達世標準 難保藍天 空氣質素指標將收緊  
21. 18 Jan 2012 – HK Commercial Daily – 空氣污染致死人數增兩倍 港大醫學院指舊指數過時 
22. 18 Jan 2012 – HK Economic Time (A22) - 環團評太寬鬆 學者指實施慢
23. 18 Jan 2012 – i4U News – Pollution hits Hong Kong health, economy
24. 18 Jan 2012 – Ming Pao Daily News (A04) – 港大研究：空氣污染5年殺3200人 
25. 18 Jan 2012 – Ming Pao Daily News (A04) – 政府須擇善固執 空氣質素才有望改善
26. 18 Jan 2012 – Oriental Daily News – 港空氣質素指標發晒霉- 東方日報
27. 18 Jan 2012 – Oriental Daily News – 港府「唔爭氣」衰過孟加拉
28. 18 Jan 2012 – SCMP (CITY1) – No cause to breathe easier  
29. 18 Jan 2012 – SCMP (EDT1) – Clean-air targets don’t measure up, critics say
30. 18 Jan 2012 – SCMP (CITY1) – Gasp, it’s worse than we thought  
31. 18 Jan 2012 – SCMP (BIZ8 – Lai See) – Clearly, he’s insincere  
32. 18 Jan 2012 – SCMP – 達理指數更新，香港空氣汙染危害較預計嚴重 
33. 18 Jan 2012 – Sharp Daily (V03) – 空氣質素指標落實更新  
34. 18 Jan 2012 – Silo breaker – Pollution hits Hong Kong health, economy
35. 18 Jan 2012 – Sing Pao (A04) – 達理指數推算每月逾三千人死
36. 18 Jan 2012 – Singtao Daily (F05) – 能源科技與環境+今日香港 量度空氣污染水平港大推新「達理指數」
37. 18 Jan 2012 – Sun (A02) – 港空氣新指標落後過孟加拉
38. 18 Jan 2012 – Sun (A04) – 更新指標半遮面 烏煙瘴氣何時了
39. 18 Jan 2012 – Ta Kung Pao (A3) – 港大：年均3200人死於空污 
40. 18 Jan 2012 – Ta Kung Pao – 港空氣指標不及印度 
41. 18 Jan 2012 – The Standard – Clearing the air  
42. 18 Jan 2012 – Treehugger.com – Pollution hits Hong Kong health, economy
43. 18 Jan 2012 – Treehugger.com – Hong Kong Says Air Quality Objectives to Take Start 2014
44. 18 Jan 2012 – Wen Wei Po (A02) - 吸污氣折壽 每年3200人早死
45. 19 Jan 2012 – Double Clip – Pollution hits Hong Kong health, economy
46. 19 Jan 2012 – Hong Kongers – Pollution hits Hong Kong health, economy
47. 19 Jan 2012 – SCMP (Opinion) – Clearly lagging
48. 19 Jan 2012 – The coming crisis – Pollution hits Hong Kong health, economy
49. 20 Jan 2012 – SCMP (BIZ8 – LAISEE) - Michael Tien struggles through a fog of information
50. 20 Jan 2012 – SCMP (Opinion) – We’ve had enough of all this hot air
51. 26 Jan 2012 – Epoch Times – Clean Air Targets Disappointing in Hong Kong, Say Environmentalists
52. 31 Jan 2012 – SCMP (A13) – A pledge to act is just hot air without quality standards