this post was submitted on 03 Nov 2024
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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

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The passive house trend is booming (www.yahoo.com)
submitted 1 week ago by kalkulat@lemmy.world to c/climate@slrpnk.net
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Quote: " It's "designed to be as energy efficient as possible, typically with top-notch insulation and a perfect seal that prevents outside air from penetrating the home"

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[–] JoMiran@lemmy.ml 36 points 1 week ago* (last edited 1 week ago) (2 children)

You have to vent your house. Indoor pollution is often much higher and much more toxic than people imagine.

[–] kata1yst@sh.itjust.works 38 points 1 week ago (2 children)

Usually passive houses come with some sort of air exchanger system. Fresh air with minimal efficiency impact.

[–] DigitalNirvana@lemm.ee 23 points 1 week ago

Yes, there are devices that allow one to exchange air, while scavenging heat, so there is very little loss. Couple that with decent air filtration HEPA, etc, and you can maintain your indoor air quality.

[–] JoMiran@lemmy.ml 10 points 1 week ago

That would make sense.

[–] OminousOrange@lemmy.ca 19 points 1 week ago

Passive House has a minimum ventilation rate of 0.3 ACH, but minimum code requirements can also come into play. Ventilation for health and hygiene is very much a consideration of the standard.