Monarch butterflies are in trouble.

The U.S. Fish and Wildlife Service recently launched a one-year assessment of the winged beauties to see if they should be put on the endangered species list. Deforestation, pesticides, and extreme weather have decimated monarch populations, and a senior scientist at the Center for Biological Diversity says the 90 percent decline seen over the last 20 years is comparable to "losing every living person in the United States except those in Florida and Ohio." Yikes. That sounds really bad. LiveScience