Superfilter nanomask protects from invisible killers

The novel mask, developed by Professor Wallace Leung of The Hong Kong Polytechnic University, is made out of multiple layers of different types of nanofibres, which filter nanosized particles.

Lead from leaded petrol persists in London air despite '90s ban

Lead levels in London's atmosphere have dropped drastically since lead additives in petrol were phased out, and currently meet UK air quality targets. However despite this drop, airborne particles in London are still highly ...

Scientists bear witness to birth of an ice cloud

Scientists have witnessed the birth of atmospheric ice clouds, creating ice cloud crystals in the laboratory and then taking images of the process through a microscope, essentially documenting the very first steps of cloud ...

China's thick smog arrives in Japan

The suffocating smog that blanketed swathes of China is now hitting parts of Japan, sparking warnings Monday of health risks for the young and the sick.

Delhi's air as dirty as ever despite some reforms

(AP) -- A decade ago, plans for a metro and clean-fuel buses were hailed as New Delhi's answer to pollution. But air in the Indian capital is as dirty as ever - partly because breakneck development has brought skyrocketing ...

Ocean life triggers ice formation in clouds

Researchers have shown for the first time that phytoplankton (plant life) in remote ocean regions can contribute to rare airborne particles that trigger ice formation in clouds. Results published this week (Wednesday 9 September) ...

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