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An emergency polio ward in Boston in 1955 equipped with iron lungs. These pressurized respirators acted as breathing muscles for polio victims, often children, who were paralyzed. www.apimages.com

The deadly polio epidemic and why it matters for coronavirus

Polio was nearly eradicated with the Salk vaccine in 1955. At the time, little was known about this mysterious disease that paralyzed and sometimes killed young children.
Protective measures and their safety assurances can change how people act around risk. Alfredo Falcone/LaPresse via AP

When safety measures lead to riskier behavior by more people

Behavioral economists explain how widespread use of face masks, hand sanitizer and other preventive measures could counterintuitively encourage riskier behaviors around coronavirus.
LiDAR helps an autonomous vehicle ‘visualize’ what’s around it. Yulong Can with data from Baidu Apollo

Autonomous vehicles can be fooled to ‘see’ nonexistent obstacles

Driverless vehicles rely heavily on sensors to navigate the world. They’re vulnerable to attack if bad actors trick them into ‘seeing’ things that aren’t there, potentially leading to deadly crashes.