Monarch butterflies are a keystone species, meaning they play a massive role in their native ecosystems. Think you know ...

With the monarch population well below the thresholds at which government scientists predict migrations could collapse, the Center and more than 100 other groups have repeatedly called on Congress to ...

WATCH: How conservationists are rebuilding monarch butterfly habitat on the Central Coast How one organization is rebuilding monarch butterfly habitat on the Central Coast The Pismo Beach State ...

The Western population of the monarch ... by 2080. Habitat destruction, pesticides and extreme weather fluctuation due to climate change are all to blame for the butterfly’s decline.

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 ...

The Western population of the monarch ... to 4 million butterflies were estimated to spend winter in California, according to the California Department of Fish and Wildlife. Without urgent ...

The Western population of the monarch ... by 2080. Habitat destruction, pesticides and extreme weather fluctuation due to climate change are all to blame for the butterfly's decline.