90.9 WBUR - Boston's NPR news station
Top Stories:
PLEDGE NOW
Why You Should Worry About The Butterflies

This year’s monarch butterfly migration is the smallest ever recorded. We’ll ask why. It’s a big story. Plus: how climate change is creating new hybridized species.

In this Oct. 21, 2013 file photo, a monarch butterfly lands on a confetti lantana plant in San Antonio. A half-century ago Monarch butterflies, tired, hungry and bursting to lay eggs, found plenty of nourishment flying across Texas. Native white-flowering balls of antelope milkweed covered grasslands, growing alongside nectar-filled wildflowers. But now, these orange-and-black winged butterflies find mostly buildings, manicured lawns and toxic, pesticide-filled plants. (AP)

In this Oct. 21, 2013 file photo, a monarch butterfly lands on a confetti lantana plant in San Antonio. A half-century ago Monarch butterflies, tired, hungry and bursting to lay eggs, found plenty of nourishment flying across Texas. Native white-flowering balls of antelope milkweed covered grasslands, growing alongside nectar-filled wildflowers. But now, these orange-and-black winged butterflies find mostly buildings, manicured lawns and toxic, pesticide-filled plants. (AP)

We love butterflies, and monarch butterflies are called “monarch” for a reason.  They are grand.  All that fluttering orange and black display on a winged scale built to impress.  To charm.  But monarch butterflies are in trouble.  This year saw the smallest migration ever recorded to their winter retreat in the mountains of Mexico.  And if you are looking this summer for monarchs, they’ve been hard to find.  There’s a reason, and it goes back to genetically-modified crops, say my guests today.  This hour On Point:  monarch butterflies, beautiful and in trouble.

– Tom Ashbrook

Guests

Lincoln Brower, research professor of biology at Sweet Briar College.

Karen Oberhauser, associate professor in the department of fisheries, wildlife and conservation biology at the University of Minnesota. Director of the Monarchs in the Classroom and Monarch Larva Monitoring Programs.

Rick Mikula, President of Butterfly Rescue International. Author of “Garden Butterflies of North America.”

From Tom’s Reading List

Washington Post: Monarch butterflies keep disappearing. Here’s why. — “The number of butterflies migrating to Mexico has been dropping sharply. In 2012, just 60 million monarchs arrived at their overwintering habitats, a record low. And fresh data from WWF Mexico suggests that the current winter’s numbers are even lower — down to just 33 million butterflies across 0.67 hectares (1.65 acres). That’s the lowest area on record.”

Scientific American: Climate Change May Disrupt Monarch Butterfly Migration — “A monarch butterfly navigates using a sun compass in its mid-brain and circadian clocks in its antennae. But, until now, what makes a monarch reverse its direction has remained a mystery. New research shows that the chill at the start of spring triggers this switch.”

The Guardian: Endangered butterfly defies climate change with new diet and habitat – “Other butterfly species have been changing habitat or diet to cope with a changing climate but the quino checkerspot is the first butterfly known to science to change both so rapidly. Many environmentalists fear that climate change is happening too quickly for species to adapt but, according to Parmesan, this surprising example shows that some apparentlydoomed species may be more resilient than we imagine.”

Climate Change And Hybridized Species

Moises Velasquez-Manoff, science and environmental writer. Author of “An Epidemic of Absence.” (@moisesvm)

New York Times: Should You Fear the Pizzly Bear? —  “In an exceedingly brief period, coyote, wolf and dog genes have been remixed into something new: a predator adapted to a landscape teeming with both prey and another apex predator, us. And this mongrel continues to evolve. Javier Monzon, an evolutionary biologist at Stony Brook University, has found that Eastern coyotes living in areas with the highest densities of deer also carry the greatest number of wolf genes.”

Please follow our community rules when engaging in comment discussion on this site.
ONPOINT
TODAY
Oct 20, 2014
A statue of President Franklin Delano Roosevelt on New York City's Roosevelt Island. (Flickr / Alexisrael)

Greatness and the American Presidency. Aaron David Miller says aim for good. Really good.

Oct 20, 2014
In this Oct. 2, 2014 photo, patrons line up for “Nightmare: New York,” a haunted house attraction in New York. (AP)

Afraid of snakes? Heights? Ebola? We’ll unpack the science of fear.

RECENT
SHOWS
Oct 17, 2014
Jazz violinist Regina Carter. (Courtesy of the Artist)

Regina Carter turns her jazz violin down home with her new album “Southern Comfort.”

 
Oct 17, 2014
U.S. Senate Minority Leader Mitch McConnell (R) Ky., center, and Democratic opponent, Kentucky Secretary of State Alison Lundergan Grimes, rehearsed with host Bill Goodman before their appearance on "Kentucky Tonight" television broadcast live from KET studios in Lexington, Ky.,Monday, Oct. 13, 2014. (AP)

The CDC in the hot seat on Ebola. Markets reeling. Mid-term fireworks. Our weekly news roundtable goes behind the headlines.

On Point Blog
On Point Blog
Introducing The Explicast: A New Podcast From On Point Radio
Friday, Oct 17, 2014

Confused about the news? Don’t worry: so are we sometimes! Introducing a new On Point Radio podcast: The Explicast. You can find Episode One right here.

More »
Comment
 
Two LIVE Tracks From Jazz Violinist Regina Carter
Friday, Oct 17, 2014

Regina Carter shares two live tracks — one arrangement, and one original composition — with Tom Ashbrook in the On Point studio.

More »
Comment
 
Our Week In The Web: October 17, 2014
Friday, Oct 17, 2014

We talk Facebook mishaps, whether Katy Perry was actually right and the glory of architectural giants and their iconic windows.

More »
Comment