this post was submitted on 12 Jul 2024
251 points (99.6% liked)

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

5383 readers
334 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 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[โ€“] [email protected] 2 points 5 months ago (1 children)

Your body adapts to the footwear you grow up in. If you grow up wearing shoes with lifted heels, your tendons will shorten to compensate. The average running shoe these days has a heel lift of about 10mm (6mm lower than when I was in college). Of you wear shoes like this all the time you'll experience Achilles tendon pain if you try to transition into a show with a heel to toe drop of 6mm or less too quickly.

You'll see barefoot running advocates saying you can run injury free with 0mm of drop, or at the very least without more injuries than a shod runner, but people frequently misinterpret that to mean "you should start going barefoot immediately" which isn't what any barefoot coach would recommend. In fact for most athletes what makes the most sense is a mix of shod and unshod running. Super ironically, to bring it back to Nike, they DO have a couple of really important innovations in running technology. One of those was that Oregon's long distance coach, and Nike's founder, created a custom pair of shoes for one of his athletes who was experiencing Achilles tendon pain on her long runs. The innovation was to take a mostly flat running shoe (as was the style at the time) and introduce a 4mm foam wedge to relieve that tendon pain so she could still get in her long miles.

Note! Even then, at the beginning of Nike, the advice to the high level athlete was "mostly run this way, but sometimes put on these other shoes." That's still what most serious coaches and athletes are doing. You do most of your running with a pair of shoes with some lift or barefoot, and then you do a minority of your mileage in a shoe that's more or less minimal than your daily trainer. The real fallacy of running footwear is the notion that any one single thing is your solution to everything.

[โ€“] [email protected] 1 points 5 months ago

Appreciate the context, thanks! It seems like, as with all things, a diversity of stresses on the body builds resiliency. I rock climb and while the shoes have improved over the years, they are still brutal on the feet. You can feel how they mold your feet because if you take a month off, everything feels totally different and much tighter. While I'm a little worried about damage, I've never had any issues but I mostly attribute that to wearing a bunch of different shoes for different activities, plus barefoot when I can.