The monarch is a common butterfly, found in the Americas that is considered a poster species of pollinating insects. The monarch butterfly is easily recognizable because of its bright black, orange, and white patterns. Monarch butterflies are a parasite to their caterpillars’ only food source, milkweed. This plant itself is toxic to thwart insects from consuming its plant body, this includes an attempt to be toxic to monarchs. This has resulted in an evolutionary arms race between the two species.
You’ve probably released monarch butterflies at some point in your life, if you’re from the Americas, but what do you really know about this flagship species?
How does this tiny insect migrate such great distances, something normally only seen in larger animals like birds? How did monarchs evolve to eat a toxic plant, and why do they still exclusively eat it? What, if any, are the benefits of releasing captive raised Monarchs into the wild? What needs to be done to ensure the survival of this species?
You probably think you know all about this common butterfly, but do you really? Listen now to learn about the most recognizable and well studied butterflies on the planet.
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Cardiac Cowboys
The heart was always off-limits to surgeons. Cutting into it spelled instant death for the patient. That is, until a ragtag group of doctors scattered across the Midwest and Texas decided to throw out the rule book. Working in makeshift laboratories and home garages, using medical devices made from scavenged machine parts and beer tubes, these men and women invented the field of open heart surgery. Odds are, someone you know is alive because of them. So why has history left them behind? Presented by Chris Pine, CARDIAC COWBOYS tells the gripping true story behind the birth of heart surgery, and the young, Greatest Generation doctors who made it happen. For years, they competed and feuded, racing to be the first, the best, and the most prolific. Some appeared on the cover of Time Magazine, operated on kings and advised presidents. Others ended up disgraced, penniless, and convicted of felonies. Together, they ignited a revolution in medicine, and changed the world.