Why Is The Monarch Butterfly Population Shrinking?

Margaret Roach, reporting for Latina Lista:

 

“Where are the monarch butterflies this year?” One of many recent emails on the topic asked me. Headlines about monarch decline seem to confirm gardeners’ observations: Populations of the once-familiar orange-and-black creatures are not what they were. What’s going on, and how bad is it? Is there anything we can do?

Some good links to other information on Monarch Butterflies at end of article.