What Is a Weed? Not everyone agrees on which plants are weeds, or what to do about them. Not all weeds need to be eradicated.

Aaaachoo! Are you sneezing from dawn to dusk, with weepy, bloodshot eyes, stuffy nose, dull headache and scratchy throat? Instead of coming down with a late summer cold, you might be suffering ...

Get Instant Summarized Text (Gist) Ragweed's rapid global invasion is attributed to 37 large-scale genetic changes, including supergenes, which enable it to adapt quickly to diverse environments ...