As many as 50 million people in the United States have an allergic reaction to poison ivy, poison sumac or poison oak each year, leaving them with an irritating rash that can stick around for weeks.

People have used poisons throughout history for a variety of purposes: to hunt animals for food, to treat diseases and to achieve nefarious ends like murder and assassination. But what is a poison? Do ...

Add Yahoo as a preferred source to see more of our stories on Google. It's a dangerous weed found along roadsides, open fields and creek beds throughout Michigan. When ingested, it can be deadly.

Poison control centers handle millions of calls every year about exposures to just about anything you can imagine — from chia seeds and gummy vitamins to bleach and button batteries. Although young ...

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Poison control centers handle millions of calls every year about exposures to just about anything you can imagine — from chia seeds and gummy vitamins to bleach and button batteries. Although young ...