Time for Kids, a a weekly classroom news magazine produced by TIME Inc. that covers “a wide range of real-world topics,” focused its Sept. 30 issue on monarch butterflies. Professor of Biology Ernest Williams was quoted extensively throughout the two lead articles that also referenced his recently published study on the decline of monarchs.

Williams discussed the use of chemicals that kill milkweed plants on which female monarchs lay their eggs. He urged readers to “plant milkweeds or maintain areas where the plant can grow.”