Despite some conservationists’ concerns, UC Davis researchers show that tropical milkweed has minimal impact on California monarch butterflies’ migratory patterns.

Monarch butterflies are quite a sight to see, arriving mid-October and staying in the area through the end of February.

U.S. Senator Jeff Merkley (D-OR) and U.S. Representative Jimmy Panetta (D-CA) introduced a bill on Friday aimed at preventing ...

Monarch Butterflies travel up to 3,000 miles in their migration from Mexico to Canada.