By any measure, the revival of the bald eagle stands as one of the great environmental triumphs in conservation history. In ...

Monarch butterflies are poisonous to predators because of the chemicals in the milkweed they eat as caterpillars. In just the 9 to 14 days of the larval stage, a monarch caterpillar can grow to 2,700 ...

Climate change and industrial agriculture have decimated the western monarch butterfly’s crucial food source, threatening the ...

The annual migration of monarch butterflies is one of science's great mysteries: millions of monarchs know the correct path ...

Monarch butterflies are beautiful backyard favorites—but they’re also toxic. Monarchs lay their eggs on milkweed plants, ...

Many of us encourage milkweed to grow in our yards because it’s a host plant for monarch butterflies ... s white berries and leaves are moderately poisonous to humans. The plant also attaches ...

The plight of the monarch butterfly could cost farmers a valuable tool in the fight to protect crops from weeds and pests. An ...

Monarch butterflies are making their flight north after wintering in Mexico. Here's what to know about one of Earth's fascinating flyers in Michigan.

Tens of millions of monarch butterflies are on an epic aerial journey home. They've spent the winter hanging out in trees in a forest on a remote mountain in Mexico, resting up after flying all ...

SALT LAKE CITY — The U.S. Fish and Wildlife Service said it is reopening the public comment period for a proposed rule to list the monarch butterfly as a threatened species under the Endangered ...

Monarch butterflies are poisonous to predators because of the chemicals in the milkweed they eat as caterpillars. In just the 9 to 14 days of the larval stage, a monarch caterpillar can grow to 2,700 ...