Add Yahoo as a preferred source to see more of our stories on Google. Got a question about survival? Send it to Backpacker. I’ve always heard that hikers should “drink to their thirst,” but how long ...

When you take aspirin for a headache, how does the aspirin know to travel to your head and alleviate the pain? The short answer is, they don’t. Molecules can’t transport themselves through the body, ...

Toxic chemicals used to flame-proof plastic materials can be absorbed into the body through skin, via contact with microplastics, new research shows. The study offers the first experimental evidence ...

Chemical digestion occurs when the body uses enzymes to break down certain molecules, such as carbohydrates. This process allows the bloodstream to absorb smaller molecules to transport around the ...