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tear gas

Soldiers practice responding to a chemical or biological weapons attack.

What’s a chemical weapon? A global weapons treaty could use some clarity

By Lennie Phillips​ | Chemical Weapons

A drive-thru coronavirus testing site.

What a MERS outbreak taught South Korea, why kids draw the coronavirus, and more: The best disruptive tech stories of 2020

By Matt Field | Disruptive Technologies

Police officer with a gas mask.

Why is tear gas banned in war but not from peaceful protests?

By Matt Field | Disruptive Technologies