Our biggest fears are often not unfounded and the threats we anticipate shape the decisions that impact our lives. But what are people most afraid of across the world? Increasingly, it turns out, of extreme weather and tech-related threats. A World Economic Forum survey on the greatest threats facing humans shows how the perception has swung in recent years. Here's a look. 

 
• infographic
 
• extreme_weather
 
• climate_change
 
• world