Ozone pollution levels dropped early in pandemic

During spring and summer of 2020, ozone at 1-8 kilometers (0.6-5 miles) above Earth's surface fell by 7% on average across the Northern Hemisphere, a new study finds. The decrease is likely explained by curtailed transportation ...

Grounded aircraft could make weather forecasts less reliable

Thanks to travel restrictions and plummeting customer demand, the number of flights in the first week of April 2020 was down 61% compared with the same period in 2019. The pandemic has emptied the skies of aircraft, but it's ...

Is it a bird? Is it a plane?

It may not be your actual Superman, but participants to ESA's ɸ-week are certainly embracing some 'superhero' ideas for the future of Earth observation, including high-flying platforms – something between a satellite and ...

A clever way to recover weather balloon radiosondes

The meteorological sensors carried into the upper atmosphere by weather balloons are often lost as they return to earth. As part of their Bachelor's project, five EPFL students worked on a system to recover this equipment.

Red sky in sight shows charging at height

The Saharan dust cloud that cast a red glow over the UK last autumn helped scientists to take a step forward in understanding how to prepare for future volcanic eruptions.

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