Back

Discover CALS

See how our current work and research is bringing new thinking and new solutions to some of today's biggest challenges.

Share
New book published April 11 explores how an insect and plant evolved together

The evolutionary arms race between monarch butterflies and milkweed plants has advanced human knowledge of biology, chemistry, and ecology, and has even led to promising new cancer therapies.

These “royal representatives of all interacting species” are the subject of a new book by Anurag Agrawal, professor of ecology and evolutionary biology and entomology. His illustrated science book Monarchs and Milkweed: A Migrating Butterfly, a Poisonous Plant, and Their Remarkable Story of Coevolution, was released April 11 by Princeton University Press.

Agrawal has been studying the dynamic between monarchs and milkweed for over 15 years, but he came to realize that there were vast amounts of information about these organisms that he didn’t know. Monarchs and milkweed, individually and as a pair, have been studied and cherished for hundreds of years, and his book is a celebration of this knowledge.

The monarch butterfly, with its brilliant colors, astonishing 3,000-mile migration, and capacity to survive exclusively on a poisonous plant, has become a mascot for myriad organizations, from the Union of Concerned Scientists to the Monarch Business School in Zug, Switzerland.

In its attempts to protect itself from monarchs, milkweed plants have developed compounds — cardiac glycosides — that, in large doses, can be lethal. But in small doses, those compounds are used to treat congestive heart failure. Recent studies have found that cardenolides also have anti-cancer and antimicrobial properties.

“Milkweeds evolved to protect themselves from predators, such as monarchs, but that co-evolutionary process has had many unanticipated consequences for humanity,” Agrawal said. 

The book is available on Amazon and from other retailers.

Keep Exploring

A lit candle infront of a dark background.

News

Gilbert Levine ’48, Ph.D. ’52, whose 68 years of service to Cornell were devoted to fostering multidisciplinary and international collaboration, died Feb. 5 in Fitchburg, Wisconsin.

  • Biological and Environmental Engineering
6 individuals standing and smiling

News

Lectures On March 15, 2024, Professor Bruce Lewenstein delivered the inaugural lecture for Northeastern University’s Public Engagement with Science Hub, entitled “The Past, Present, and Future of Public Engagement with Science.” Bruce provided a...