Researchers compile world's first 'atlas' of airborne microbes

Bacteria are truly abundant across the Earth's surface, from the soil to the oceans. The microbial population of the air that surrounds us is comparatively unknown, but a research expedition led by PolyU scientists is about ...

'Urban canyons' prolong sonic booms in cities

Twenty years after the retirement of the Concorde, several industrial and research projects want to make supersonic flight a reality again. However, supersonic planes produce sonic booms loud enough to warrant noise concerns ...

The role of vegetation in reducing thermal stress in urban areas

Scientists at the Technical University of Munich (TUM) conducted a multi-year empirical study to assess the impact of trees on city temperatures. Taking the city of Würzburg as an example, the researchers showed that vegetation ...

Increase in atmospheric methane set new record in 2021: NOAA

For the second year running, US scientists observed record increases in the atmospheric concentration of the potent greenhouse gas methane, the National Oceanic and Atmospheric Administration (NOAA) said Thursday.

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