The decline in total occupied forest may not equate to an overall loss in butterfly numbers, but scientists are still concerned that their populations are suffering.

Details of Homero Gómez González’s death are not yet known.

Genetically engineered Drosophila withstand toxins common in monarch butterflies’ diet.

Enforcement of the Endangered Species Act will be altered, easing protections for the most critically threatened plants and animals.

In the last year, the butterfly’s eastern group has more than doubled its hibernation area while the other population waned. Plus, researchers are moving trees to save monarch habitat.

Lincoln Brower, an American entomologist famous for his work to conserve the monarch populations of Mexico and the US, has passed away at age 86.

The iconic butterflies have flocked to their Mexican overwintering grounds, seemingly reversing recent population declines.