Polish researchers invent anti-smog sound cannon

In a battle against Poland's constant smog, scientists are testing out a new "cannon" that uses soundwaves to push toxic particles higher into the atmosphere to allow residents to breathe.

Toxic Sydney bushfire haze a 'public health emergency'

Australia's biggest city is facing a "public health emergency" over the bushfire smoke that has choked Sydney for weeks, leading doctors warned Monday after hospitals reported a dramatic spike in casualty department visits.

Haze smoke affects butterfly caterpillars

NUS biologists have discovered that haze affects the survival and development of butterflies, which could have an adverse impact on our environment.

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