A group of American scientists have likened the smog caused by Asian, Australian and South American bushfires to the smog that makes Los Angeles air, the dirtiest in America.
Nobel Laureate F. Sherwood Rowland is among the scientists who released a report following a series of Nasa sponsored research flights to islands from the Galapagos to Fiji.
They traced the pollutants to massive agricultural burning in areas where farmers were clearing land to plant crops and graze cattle.
The scientists are concerned at the extent of the pollution caused by the burning and the distance it travelled.
The research was conducted prior to the recent Asian bush fires which were made worse by droughts associated with the El Nino weather pattern.
=A9 1998 Australian Broadcasting Corporation
Wed Apr 1 17:30:00 1998 ( AEST )
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