this post was submitted on 12 Apr 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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[–] [email protected] 4 points 5 months ago (5 children)

Yeah, Cambridge, MA has done a lot. The last job I had there was on a newly renovated building and per city regs it had to have a full bike room and showers. I thought it was oversized but obviously welcome, but by summer it was over-full. Though the space could be much better used.

That summer at one intersection I was stuck in congestion - bike congestion. There were 30 commuters ahead of me at the light on the way home - a light that 6 or 7 cars got through per cycle.

It's far from perfect, but just cross the river to Boston and it's a different world, even though Boston has probably improved more than most US cities too.

[–] [email protected] 1 points 5 months ago (4 children)

I suspect that's true if only because most us cities haven't improved at all

Boston is putting in a bunch of bike lanes but most of them aren't protected

That said, the North end has a wonderful separated bike lane. Same as the seaport

Except for a stretch by long wharf I can just about bike the entire way using separated bike lanes if I don't mind going out of my way a little bit

[–] [email protected] 1 points 5 months ago (3 children)

but most of them aren’t protected

That said, the North end has a wonderful separated bike lane.

Well there I part ways with a lot of local pro-cycling opinion. Separated lanes are only superior under tightly controlled design, and most around here are far from that and give an entirely false sense of security. They're often hidden behind parked cars and every intersection is highly stressful minefield of interactions with drivers completely unaware of your presence. That Commercial St path in the North end is not separated at all from pedestrians and is (belligerently) considered by most joggers to be a their path, and pedestrians don't think of looking before lurching into it unpredictably. Even the stretches where the pedestrian area is 15-20ft wide, the majority of joggers use the bike path, and where it's crossed by side streets and parking entrances, cars will just blow through your path.

The Seaport Blvd "separated lane" is f'ing lethal. The Somerville Beacon St lane made things significantly worse IMO. I commuted that regularly before when there was just a big wide lane rideable without any drama or difficulty. After the new lane I only rode it 30 or so times and with the near misses I experienced or witnessed mean I avoid that route eastbound if at all possible. Now it's a hidden lane behind parked cars where motor traffic often doesn't notice cyclists and blows right across your path.

Separated lanes are the ideal when they're done right, following best practices, e.g. from the Dutch, which means not on roads with many crossing intersections, and at intersections the lane needs to be carefully managed with a significant period pulled out clearly beside the motor traffic lane before the crossing.

After a dooring 18 years ago I've been very careful passing parked cars in general, but a false sense of security in a segregated lane, and a brief failure to recognize the danger, means I was doored again 3 months ago, from the left. Frankly it just confirmed what I've been feeling over the last few years about unsophisticated "separated lanes good" attitudes. A lane painted alongside traffic is often not inferior in reality, in my experience, even if (and sometimes because) it doesn't make people feel so secure.

[–] [email protected] 2 points 5 months ago

I just started biking again so I might be a bit naive

Hopefully things keep improving. I'm definitely in favor of Dutch style transportation

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