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Medicine

Personal Protective Equipment (PPE)

Quick fact

The modern N95 respirator can filter out at least 95% of airborne particles as small as 0.3 microns, a standard set by the National Institute for Occupational Safety and Health (NIOSH).

Why this is interesting

You probably wore a mask during the pandemic, but did you know that the concept of Personal Protective Equipment (PPE) dates back centuries, evolving from simple cloth barriers to sophisticated, multi-layer materials that can stop viruses, chemicals, and even radiation?