But Why: A Podcast for Curious Kids
Episode Summary: Chameleons, Jellyfish, and Ballerinas! (But Why Bites)
Release Date: July 25, 2025
Host: Jane Lindholm
Produced by: Vermont Public

In this special episode of But Why, host Jane Lindholm presents a compilation from the podcast's online video series, But Why Bites. This episode delves into a variety of intriguing questions posed by curious kids, ranging from the mechanics of presidential term limits to the fascinating abilities of chameleons. Below is a detailed summary of the key topics discussed, complete with notable quotes and timestamps.

1. Why Do People Change Presidents?

Timestamp: [00:35]

Jane Lindholm begins by addressing the question, "Why do people change Presidents?" She explains the fundamental difference between a U.S. president and eternal rulers like kings or queens. Unlike lifelong monarchs, U.S. presidents are limited to serving two four-year terms. Jane clarifies:

"A president can only serve two four-year terms. That's it. Well, technically the president can only be elected twice, but they could serve a few more years if they're appointed first." ([00:40])

She provides a historical perspective, noting that while the two-term limit became an official rule in 1951, the tradition dates back to George Washington, who voluntarily stepped down after two terms. This precedent was broken by Franklin Delano Roosevelt, who was elected four times during the 1930s and 40s, prompting the constitutional amendment.

Jane emphasizes the democratic principles underpinning this system:

"The US was founded with the idea of democracy, that people have a right to choose their leader, not be ruled by someone who they don't choose." ([01:30])

She humorously concludes this segment by imagining preferable lifelong perks over perpetual presidency, setting the stage for the next topic.

2. Why Do Ballerinas Wear Ballet Shoes?

Timestamp: [02:38]

Transitioning from politics to dance, Jane tackles the question, "Why do ballerinas wear ballet shoes?" She distinguishes between simple ballet slippers and pointe shoes, the latter enabling dancers to perform en pointe—balancing on the tips of their toes.

Jane discusses the evolution and function of pointe shoes:

"They are designed to support a dancer's foot and take some of the weight of the dancer, allowing them to lift up onto their toes without crushing or breaking delicate foot bones." ([02:42])

To provide firsthand insight, Jane interviews Lindsay Donell, a company dancer with the Dance Theater of Harlem:

Lindsay Donell:

"I was so excited. It was a dream come true because that is what I've been working for." ([03:40])

Jane probes further into Lindsay's training and the durability of pointe shoes:

Lindsay Donell:

"I had to train and build technique and muscle strength to make sure that my toes could support my whole body weight." ([03:46])

"I usually go through about two pairs a week." ([03:56])

Jane concludes this segment by highlighting that, despite the essential role of pointe shoes, the dancer's skill and strength are paramount:

"Even the best shoes aren't making the dancer brilliant. That's all down to the strength and beauty of the dancer herself." ([04:13])

3. What is a Solar Eclipse?

Timestamp: [04:50]

Jane shifts to astronomy with the question, "What is a solar eclipse?" She explains that a solar eclipse occurs when the moon moves between the sun and the Earth, fully or partially blocking the sun's light.

Key points include:

• Totality: When the sun is completely obscured by the moon, lasting from one to seven minutes depending on location.

  "As the moon moves in its orbit, it will partially cover the sun for over an hour until the sun is totally blocked. That's called totality." ([04:53])

Jane advises on safety measures when viewing an eclipse:

"If you're going to watch an eclipse, you need to protect your eyes. The bright light of the sun can damage them even while the moon is partially in front of it, so you have to wear something like these eclipse glasses." ([05:20])

She also debunks the myth of using urine to alleviate jellyfish stings, emphasizing proper safety protocols instead.

4. Do All Jellyfish Sting?

Timestamp: [06:51]

Addressing marine biology, Jane explores the question, "Do all jellyfish sting?" She explains that all jellyfish possess specialized cells called nematocysts in their tentacles, which release venom upon contact.

Key insights include:

"A single tentacle can contain thousands of nematocysts, making for a very potent attack." ([06:54])

Jane describes the dual role of nematocysts in both feeding and defense:

• Feeding: Paralyzing prey for consumption.
• Defense: Protecting against predators and threats.

She also differentiates between jellyfish species, noting that while most are harmless to humans, some, like the lion's mane jelly, can be dangerous. Jane debunks the myth of using urine to treat jellyfish stings, warning that it could worsen the situation.

5. Why Do Cats Have Whiskers?

Timestamp: [08:39]

Transitioning to feline anatomy, Jane answers, "Why do cats have whiskers?" She details the various locations of whiskers on a cat's body and their specialized functions.

Highlights include:

• Sensory Function: Whiskers are deeply embedded with nerve endings, allowing cats to detect minute changes in their environment, even in the dark.

  "Whiskers help a cat sense its surroundings... That's especially helpful at night, when many wild cats like to hunt for their food." ([08:44])

• Proprioception: Whiskers assist in balance, helping cats land on their feet and navigate tight spaces.

  "Whiskers have special sensory organs called proprioceptors that help a cat stay balanced." ([10:12])

Jane also notes that whisker patterns can be unique, much like fingerprints, especially in larger cats like lions.

6. Why Do Dolphins Jump in the Air?

Timestamp: [10:12]

Addressing marine mammals, Jane explores, "Why do dolphins jump in the air?" She presents multiple theories, acknowledging that the exact reasons are still debated among scientists.

Possible explanations include:

• Breathing: Dolphins, being mammals, need to surface to breathe. Jumping allows them to take a deep breath.

  "They grab a breath of fresh air... they can take that big deep breath and then they can peek at what's happening up above the water." ([10:20])

• Speed and Efficiency: Jumping reduces water resistance, allowing dolphins to move faster.

• Parasite Removal: Leaping may help dislodge irritants like whale suckers, which are harmful parasites.

  "It might be trying to get rid of a whale sucker, a type of fish that latches onto the dolphin's skin to eat parasites it finds there." ([11:00])

• Playfulness: Some scientists believe dolphins jump simply for enjoyment, akin to humans jumping for fun.

  "Scientists think dolphins sometimes do it just because they like it." ([11:40])

7. How Do Chameleons Change Color?

Timestamp: [11:50]

Finally, Jane addresses the question, "How do chameleons change color?" She dispels the common misconception that chameleons change color solely for camouflage, revealing more complex reasons.

Key points include:

• Temperature Regulation: Chameleons adjust their hue to absorb more or less sunlight, aiding in body temperature control.

  "They're already pretty well camouflaged. They can get a little lighter or darker, though, to better match their surroundings." ([11:54])

• Communication: Bold color changes serve to attract mates or defend territory.

• Nanocrystals in Skin: Chameleons possess specialized nanocrystals that can shift closer or farther apart, altering how light is reflected and producing different colors.

  "To make bold colors, chameleons have special nanocrystals in their skin that they can move closer together or farther apart by tensing and relaxing." ([12:30])

Jane concludes this segment with a touch of admiration:

"Wish I could do that." ([12:45])

Conclusion

Jane wraps up the episode by encouraging listeners to explore the full range of But Why Bites on their YouTube channel for more engaging content. She invites kids to submit their own questions and highlights the collaborative effort behind the podcast's production.

"Stay curious." ([End])

Credits:
Produced by Melody Beaudet, Sarah Bake, and Jane Lindholm at Vermont Public.
Distributed by PRX.
Video Producer: Joey Palumbo.
Theme Music by Luke Reynolds.

For more information and to watch the accompanying videos, visit the But Why Kids YouTube channel and check the show notes for direct links. If you enjoyed this episode, please consider leaving a thumbs up or a review on your preferred podcast platform.