![A Swiss Air Force F-5E Tiger aircraft returns in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and A Swiss Air Force F-5E Tiger aircraft returns in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and](https://c8.alamy.com/compfr/2e693tr/a-swiss-air-force-f-5e-tiger-aircraft-returns-in-payerne-after-a-radioactivity-measurements-flight-over-switzerland-march-23-2011-an-aerosol-collector-is-located-under-each-wings-of-the-aircraft-and-filters-the-air-to-collect-fines-particles-at-an-altitude-of-10000-meters-32808-feet-to-15000-meters-49212-feet-the-federal-office-of-public-health-foph-has-been-conducting-flights-on-a-regular-basis-in-the-past-years-to-monitor-the-radioactivity-but-due-to-the-situation-in-japan-decided-to-increase-them-until-end-of-march-2011-the-results-are-not-known-yet-reuters-denis-balibouse-2e693tr.jpg)
A Swiss Air Force F-5E Tiger aircraft returns in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and
![A Swiss Air Force F-5E Tiger aircraft lands in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and A Swiss Air Force F-5E Tiger aircraft lands in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and](https://c8.alamy.com/compfr/2cxj5n6/a-swiss-air-force-f-5e-tiger-aircraft-lands-in-payerne-after-a-radioactivity-measurements-flight-over-switzerland-march-23-2011-an-aerosol-collector-is-located-under-each-wings-of-the-aircraft-and-filters-the-air-to-collect-fines-particles-at-an-altitude-of-10000-meters-32808-feet-to-15000-meters-49212-feet-the-federal-office-of-public-health-foph-has-been-conducting-flights-on-a-regular-basis-in-the-past-years-to-monitor-the-radioactivity-but-due-to-the-situation-in-japan-decided-to-increase-them-until-end-of-march-2011-the-results-are-not-known-yet-reuters-denis-balibouse-s-2cxj5n6.jpg)
A Swiss Air Force F-5E Tiger aircraft lands in Payerne after a radioactivity measurements flight over Switzerland March 23, 2011. An aerosol collector is located under each wings of the aircraft and
![Celebrating graduation at 15,000 feet – Three Bachelor's alumni put the parties on ice to make memories on snow - Glion Website Celebrating graduation at 15,000 feet – Three Bachelor's alumni put the parties on ice to make memories on snow - Glion Website](https://www.glion.edu/static/7f4b25303a526ff249ddb53fbe9baa56/climbing-mont-blanc-students-in-switzerland.jpg)
Celebrating graduation at 15,000 feet – Three Bachelor's alumni put the parties on ice to make memories on snow - Glion Website
![Solar panels are pictured on the roof of the Palexpo Exhibition Center in Geneva October 11, 2011. Once finished, it will be the biggest solar farm in Switzerland with 15,000 photovoltaic panels Solar panels are pictured on the roof of the Palexpo Exhibition Center in Geneva October 11, 2011. Once finished, it will be the biggest solar farm in Switzerland with 15,000 photovoltaic panels](https://c8.alamy.com/comp/2CYN6YK/solar-panels-are-pictured-on-the-roof-of-the-palexpo-exhibition-center-in-geneva-october-11-2011-once-finished-it-will-be-the-biggest-solar-farm-in-switzerland-with-15000-photovoltaic-panels-covering-a-surface-of-48000-square-meters-516000-square-feet-and-producing-for-the-industrial-services-of-geneva-enough-electricity-to-power-1200-households-picture-taken-with-a-fisheye-lens-reutersdenis-balibouse-switzerland-tags-environment-energy-2CYN6YK.jpg)
Solar panels are pictured on the roof of the Palexpo Exhibition Center in Geneva October 11, 2011. Once finished, it will be the biggest solar farm in Switzerland with 15,000 photovoltaic panels
![A worker installs solar panels on the roof of the Palexpo Exhibition Center in Geneva October 12, 2011. Once finished, it will be the biggest solar farm in Switzerland with 15,000 photovoltaic A worker installs solar panels on the roof of the Palexpo Exhibition Center in Geneva October 12, 2011. Once finished, it will be the biggest solar farm in Switzerland with 15,000 photovoltaic](https://c8.alamy.com/comp/2D0GN3M/a-worker-installs-solar-panels-on-the-roof-of-the-palexpo-exhibition-center-in-geneva-october-12-2011-once-finished-it-will-be-the-biggest-solar-farm-in-switzerland-with-15000-photovoltaic-panels-covering-a-surface-of-48000-square-meters-516000-square-feet-and-producing-for-the-industrial-services-of-geneva-enough-electricity-to-power-1200-households-reutersdenis-balibouse-switzerland-tags-environment-energy-2D0GN3M.jpg)