Monarch butterflies have declined 80% or more in recent decades. Here's how to help
Thogmartin and other researchers have evaluated more than 200 scenarios for restoring greater than 1.3 billion stems of milkweed to rebuild their population. Without substantial participation from ...
CBS News8d
Monarch butterfly population in Western U.S. nears record 30-year low. Here's what to know.
The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...