But new pollution threats are causing concern as air pollution mortality figures remain almost the same.

BBC: News, London

The UN and the US have expressed concern over the air strikes.

BBC: Burma admits military airstrikes on Kachin rebels

The UK minister has already spoken to leaders in Afghanistan about their concern over the US air attack which killed civilians earlier this week.

BBC: Hoon urges UK terror vigilance

And the campaign for control of Air Passenger Duty is already causing concern at the business it could draw north from Newcastle Airport.

BBC: Mind the gap on the Northern Line

But with fuel prices rising, there's a concern that, like the Air Discount Scheme, the discounted fares will catch up with the current standard fares all too quickly.

BBC: 'Winter costs are now a worry'

U.S. President Bill Clinton called Suharto from Air Force One Jan. 9 to express his concern about Indonesia's turmoil.

CNN: COVER STORY - SPECIAL REPORT

The emissions, from what are known as "burn pits, " have been a concern for troops, especially those who served at Balad Air Force Base in Iraq.

CNN: Congressmen want more info on 'burn pit' claims

In Edinburgh, 18 out of 38 air quality monitoring sites breached acceptable levels of the pollutant, while Aberdeen Council expressed concern over meeting the target near busy roads, the charity said.

BBC: Valley 'most polluted area'

"Lion Air does have the ambition to become the world's leading low-cost carrier, but the concern is that those narrow bodies are not a good fit for Indonesia, " said Ahmad Maghfur Usman, an analyst for RHB Research Institute who is based in Kuala Lumpur, Malaysia.

WSJ: Lion Air Jet Order Stirs Concern Over Glut in Southeast Asia