Winds from Pak, Punjab, Haryana make Delhi polluted: Study
A study has revealed that 46% of PM 2.5 (tiny toxic dust particles) blows into Delhi from Pakistan, Punjab and Haryana and 30% from UP, Bihar and Uttarakhand. The study was conducted by the National Physical Laboratory and National Environmental Engineering Research Institute. It contradicts Union Environment Minister Anil Madhav Dave's claims that Delhi was responsible for 80% of pollution.