Thogmartin and other researchers have evaluated more than 200 scenarios for restoring greater than 1.3 billion stems of ...

The main basis for the proposal to list monarchs as threatened is that researchers are seeing fewer of the butterflies each year at their overwintering sites. There’s little debate that the monarch’s ...

A monarch butterfly feeds at Cape May Point State Park in Lower Township, N.J., Wednesday, Oct. 14, 2020.Get Photo Monarch butterflies roost as the sun begins to set at The Nature Conservancy's ...

Mexico's monarch migration arrived late this year but in greater numbers, say caretakers at the Monarch Butterfly Biosphere ...

The monarch butterfly population continues to shrink due to factors such as climate change. People working to help the species say proposed federal protections could boost existing efforts.