Humans love finding ways to alter their consciousness, and psychedelic plants have long provided a way to do so. Why do these plants produce intoxicating compounds?

What's the right dose of CBD when you take it orally? It's a simple question with a muddled answer.

A flawed study by Harvard scientists claims that marijuana impairs driving even when users aren't high.

Scientists often interpret research to suit funding goals. Why is that problematic?