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Why synthetic emerald-green pigments degrade over time

Light is the greatest threat to 19th-century masterpieces like James Ensor’s The Intrigue, study finds. The emergence of synthetic pigments in the 19th century had an immense impact on the art world, particularly the availability of emerald-green pigments, prized for their intense brilliance by such masters as Paul Cézanne,…

F1 in Las Vegas: This sport is a 200 mph soap opera

​Yet another twist in the championship with two more weekends to go.  AT&T provided flights from Washington, DC, to Las Vegas and accommodation so Ars could attend the Las Vegas Grand Prix. Ars does not accept paid editorial content. LAS VEGAS—Formula 1 held the third annual Las Vegas Grand…

This hacker conference installed a literal antivirus monitoring system

Organizers had a way for attendees to track CO2 levels throughout the venue—even before they arrived. Hacker conferences—like all conventions—are notorious for giving attendees a parting gift of mystery illness. To combat “con crud,” New Zealand’s premier hacker conference, Kawaiicon, quietly launched a real-time, room-by-room carbon dioxide monitoring system…