Talks to Watch

I Misunderstood the Greenhouse Effect. Here's How It Works.

990K views · Feb 4, 2023 · 19:07 · 5 HN recommenders · 7 mentions · discussed 2023–2025

Sabine Hossenfelder explains how the greenhouse effect actually works, given that infrared is mostly absorbed low in the atmosphere already. She walks through why more CO2 still warms the surface.

Why Hacker News points people here: Recommended as an accessible, nuanced explanation of the mechanics of global warming, including the saturation puzzle.

“this video explains the mechanics of global warming in a way anybody can understand.”HN comment, 2023

What Hacker News said 7

Recommendssmonn_Apr 2023

“I'd recommend watching this video if you'd like to know the more nuanced story behind climate change”

Nuanced story behind climate change

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I'd recommend watching this video if you'd like to know the more nuanced story behind climate change: this video I am not qualified at all to really comment on it but this did open my eyes to how confusing the entire thing is.

in “Methane may not warm the Earth quite as much as previously thought” · view on HN
RecommendsjandreseMay 2023

“this video explains the mechanics of global warming in a way anybody can understand.”

Explains global warming mechanics accessibly

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If you are confused as to why this is a bad thing this video explains the mechanics of global warming in a way anybody can understand. this video

in “The Upper Atmosphere Is Cooling, Prompting New Climate Concerns” · view on HN
RecommendsorwinMay 2023

“Here is how the earth 'greenhouse effect' really works”

How the greenhouse effect really works

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This is good news, somehow. Here is how the earth 'greenhouse effect' really works: this video This is why Co2 do not have any effect until it reaches the high troposphere. That takes 20 years. The average climate we have right now is caused by emissions from 2003. I'll repeat that in the comments of every climate article I read by the way, sorry for the repetition. M

in “Emissions are no longer following the worst case scenario” · view on HN
RecommendsgcanyonFeb 2024

“here's an explanation of how the greenhouse effect works”

Explains greenhouse effect beyond infrared trapping

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For anyone who's curious, here's an explanation of how the greenhouse effect works -- it's not just that some infrared radiation escapes from earth to space, while some other infrared radiation gets trapped. this video

RecommendsjeffbeeFeb 2025

“This Sabine Hossenfelder video helped me understand stratospheric cooling as a climate change outcome.”

Explains stratospheric cooling as a climate change outcome

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This Sabine Hossenfelder video helped me understand stratospheric cooling as a climate change outcome. this video

in “The Upper Atmosphere Is Cooling, Prompting New Climate Concerns” · view on HN
RecommendsgcanyonOct 2025

“it's interesting and weird”

Interesting, weird explanation of how the greenhouse effect works

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Related context: Sabine Hossenfelder's explanation of how the greenhouse effect works -- it's interesting and weird: this video

in “Eliminating contrails from flying could be cheap” · view on HN
Cites itmaptMay 2024

“See also”

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See also this video And note that if you think "Maybe we shouldn't be worried until we understand this" In the past ~14 months things have taken off in ways that nobody who studies this stuff can fully explain yet (leading theory: cleaner fuel -> less sulfur dioxide forcing). We're 4 to 5 standard deviations from the 30-year mean in sea surface temperature right now. link The half of the human population that lives in South, East, and Southeast Asia have been under oppressive heatwaves in the past few days that have taken a sizable death toll. link The USDA just adjusted its planting map using 2022 data and indicated that average winter low temperatures in the US have risen 2.5 degrees over the past 10 years, and continue to rise. It's looking like extreme wet bulb events and the peripheral consequences of extreme wet bulb events are going to be perhaps the biggest consequence of failing to control CO2 emissions, as the estimate of survivable wet bulb temperatures have been revised down, their importance has been revised up, and the number of outlier heatwaves have ticked up (Vancouver? Really?!). Less sea level rise, less crop failures from weather pattern changes, less hurricanes. Billions of people who come to recognize that an unluckily sunny August week without a breeze can kill a majority of the local population, are going to want to mitigate that risk. Heat pump air conditioning & insulated housing for every single temperate & tropical human residence would work as an

in “How CO2 warms Earth and why CO2 is not 'saturated' in Earth's atmosphere” · view on HN