found that just 17 per cent of cities meet the World Health Organisation's (WHO's) air pollution guidelines. As this map reveals, 91 per cent of all countries had unsafe levels of air pollution in ...

Heathrow Airport temporarily closed Friday due to an electrical fire, causing delays for those traveling internationally.

The World Health Organization's air quality guidelines recommend that annual average concentrations of PM2.5 should not exceed 5 μg/m³ (micrograms per cubic meter of air). According to the ...

Airlines around the world are clamoring for the new plane ... data from aviation analytics firm Cirium shows. Air Canada, American Airlines, Qantas Airways and United Airlines are among those awaiting ...