this post was submitted on 29 Oct 2024
42 points (100.0% liked)

Climate - truthful information about climate, related activism and politics.

5186 readers
745 users here now

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.

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 1 year ago
MODERATORS
[email protected]
42
How Vintage Nike Airs Exposed a Flaw in a $700 Million Carbon Market | Everything from wildfires to fraud adds risk for investors in carbon offsets. New questions about how the market insures itself (www.bloomberg.com)
submitted 6 days ago by [email protected] to c/[email protected]
5 comments fedilink hide all child comments
 

TL;DR;

Nike used to put SF6, a greenhouse gas which causes 24300 times more warming than CO2 over 100 years, in the "air" cushions in their shoes. Nike stopped, and sold carbon offsets based on the counterfactual of what the world would be like if they kept putting it in shoes. These offsets are part of the "buffer pool" to compensate for the fact that some offsets turn out to be bogus or simply fail due to unanticipated consequences.

top 5 comments
sorted by: hot top controversial new old
[–] [email protected] 5 points 6 days ago

I have a pair of basketball shoes that have the Air technology. My other pair uses the more modern React cushion. Having said that, I'm never buying Nike again after a brief sneakerhead phase. I go for smaller orthopedic brands instead. They're more comfortable too.

[–] [email protected] 4 points 6 days ago (1 children)

From the Wikipedia article:

Nike likewise used it to obtain a patent and to fill the cushion bags in all of their "Air"-branded shoes from 1992 to 2006.[36] 277 tons was used during the peak in 1997.[33]

[–] [email protected] 2 points 6 days ago

That's what, ~5 million tons/yr CO2e? That's on par with the operating emissions of a large business - just for the "air" to fill a single product

[–] [email protected] 1 points 6 days ago (1 children)

I'm thinking about nitrogen, but I'm not sure if it stay in place for a few years.

[–] [email protected] 4 points 6 days ago

I think that nitrogen is what they're using now. It's readily available, cheap, and fairly easily contained.