All Of It – “Tips to Stay Cool”

Host: Kusha Navadar (filling in for Alison Stewart)
Guest: Annie Colbert, Editor in Chief of Popular Science
Date: June 20, 2024

Episode Overview

On the first day of summer and under a looming heat advisory in the New York Tri-State area, “All Of It” focuses on practical, science-backed ways to beat extreme heat. With temperatures set to soar into the 90s and humidity rising, the show crowdsources listener strategies, dives into the science of heatwaves, and shares actionable tips for staying cool. Annie Colbert from Popular Science joins as the expert guest.

Key Topics & Insights

1. Understanding Extreme Heat

[04:24–07:18]

• Heat Wave vs. Heat Dome:

  • Annie explains that a heat wave involves high-pressure systems pushing warm air toward the ground, causing sustained high temperatures. Currently, we’re under a “heat dome”—like “putting a lid on a pot”—trapping heat and preventing cooler systems from moving in.
  • “You’re just stuck in this heat and it won’t break.” —Annie Colbert [05:45]

• Climate Change’s Role:

  • Greenhouse gases act like a blanket, trapping the sun’s warmth and intensifying these events.

2. Listener Tips for Beating the Heat

[07:18–22:34]

• Covering Up Works:

  • Kat in Puerto Rico reports that full-coverage SPF clothing, like a hoodie with thumb holes, actually keeps her cooler and prevents sunburn—plus, sunscreen itself can trap heat.
    • “The hotter it gets, the more clothes I wear… I’m much cooler with that on than I am without it on.” —Kat [07:39]
  • Annie backs this up: Loose cotton/linen for lounging; moisture-wicking for activity. Clothing needs to breathe; experiment for personal comfort.

• DIY Backyard Cool-Tub Office:

  • Stefan in Brooklyn keeps a tub in his backyard filled with cold water, working from ‘home spa’ with a plank for his computer.
    • “I can just go out there, put a plank across it and put my computer on there and work in some cool water.” —Stefan [09:23]

• Frequent Cool (Not Cold) Showers & Fans:

  • Sally on the Upper West Side skips towels after cool (not cold!) showers to air-dry and swears by strategically placed fans, especially with night breezes.
    • “Moving air… makes all the difference in the world. It doesn’t have to be cold, it’s just moving air.” —Sally [10:11]
  • Annie’s science: Fans only work up to about 95°F (35°C); above that, they merely move hot air. Don’t make showers too cold (shivering = body working to warm you up).

• Mental Strategies:

  • Nancy from Dover, NJ gardens at night and watches ice-filled movies like “Dr. Zhivago” or “Ice Station Zebra” for psychological cooling.
    • “Going to those cold environs in your mind helps you cool down.” —Nancy [17:42]

• Air Circulation in Cars:

  • Kevin in Denver uses a small clamp fan in his car rather than air conditioning to save energy. Annie highlights sunshades and window venting to expel heat quickly.
    • “I don’t use the air conditioning anymore, man. I just turn this little fan on, and it’s fabulous.” —Kevin [20:02]

• Dog-Paw Safety:

  • David on the Upper West Side warns that pavement can be much hotter than air; dogs release heat through their paws, so test pavement with your hand and cool paws in water after walks.
    • “It’s all about the paws… if it’s uncomfortable for you, it’s not safe for the dog.” —David [22:34]

• Ice Packs & Vests; Fans in Every Room:

  • Listeners recommend ice vests and ice packs with fabric covers in bed, and maintaining a fan in each space.

• Hand Fans & Personal Fans:

  • Referencing the cultural legacy of hand fans, with a note to use them delicately (“One must learn to use it in a delicate way that won’t create more body heat.”)
  • Annie uses a small battery-powered stroller fan for her baby [21:49].

• Nudity in the Privacy of Home:

  • Listener’s text: “Nudity…the easiest way to stay cool in the privacy of your home.” [27:05]

3. Practical Science and Misconceptions

[11:28–19:29; 24:26–26:46]

• Direction of Fans:

  • Listener debate: Pointing fans out to push hot air or inwards to pull in cool air? Sally just goes for whichever moves air over her.

• How Our Bodies Cool:

  • Sweating: Evaporation cools us; increased blood flow to skin.
  • Heat exhaustion vs. heat stroke:
    • Exhaustion: Dizzy, sweating, thirsty – fix with shade/cool spot.
    • Stroke: Not sweating, red skin, loss of consciousness – medical emergency.

• SPF Clothing Lifespan:

  • Annie: Check manufacturer care tags; SPF effectiveness can weaken with washing and time. Use sunscreen as backup.

• Color Matters:

  • Darker colors absorb more heat (so lighter is better if not using SPF).

• Cold Foods and Drinks:

  • Myth: Eating ice cream or popsicles effectively cools you; effect is short-lived because your body quickly heats food to body temperature, burning calories and potentially making you warmer.
    • “You’re probably better off taking that popsicle, putting it on your neck, putting it on your armpit, and then by all means, eat it.” —Annie Colbert [25:53]

• Eat Hydrating Foods:

  • Favor watermelon, cucumbers, or other foods high in water content.

4. Environmental Considerations

[24:26–26:46]

• The A/C Vicious Cycle:

  • As the world warms (climate change), air conditioning demand rises, which increases carbon emissions, causing more warming—“a vicious cycle.”
  • Annie mentions Popular Science’s focus on covering sustainable cooling and energy tech—watch for innovative “Best of What’s New” solutions in their year-end coverage.

• Bad-for-the-Earth Cooling Habits:

  • Air conditioning is the biggest culprit; encourage using shade, fans, timing activity for cooler periods.

Notable Quotes & Timestamps

• “The fabric you choose should be based on the activity that you’re doing… cotton or linen, more of a natural fabric… if you are being a little bit more active, moisture-wicking fabrics.” —Annie Colbert [08:30]
• “When your inside temperature hits about 95 degrees, your fan’s not going to do a lot.” —Annie Colbert [12:33]
• “One key difference when you’re experiencing heat stroke is that you’re not sweating… when you’re experiencing heat stroke, your skin is going to turn very red and you may lose consciousness.” —Annie Colbert [14:36]

Major Timestamps

| Timestamp | Segment/Highlight | |------------|---------------------------------------------| | 01:17 | Show intro, outline of episode | | 04:24 | Annie Colbert joins, cooling strategies | | 05:45 | Science of heat domes/climate change | | 07:39 | Listener: Full coverage clothing tip | | 09:23 | Listener: Backyard tub “office” | | 10:11 | Listener: Fans and cool showers | | 12:33 | How fans really work & their temperature limit| | 13:44 | Heat exhaustion vs. heat stroke | | 17:42 | Listener: Cooling through imagination (cold movies) | | 18:25 | SPF clothing lifespan question | | 20:02 | Listener: Car clamp fan instead of A/C | | 22:34 | Listener: Dog paw safety and pavement temps | | 24:26 | Ice vests, air conditioners, cooling myths | | 25:53 | Ice cream/popsicles: why they don’t work | | 27:05 | Listener: “Nudity” as the ultimate tip |

Concluding Notes

The episode delivers a vibrant, listener-driven guide to keeping cool, blending personal ingenuity, science, and a dash of humor. Cover up (with the right fabric), move the air (but know when fans stop helping), keep hydrated (don’t trust ice cream!), and get creative—sometimes the coolest solutions are psychological or communal.

Above all, as Annie says, sustainable innovation will be key for long-term adaptation to hotter summers.

End of summary.