Live data from Hacker News

Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

e360.yale.edu

281–290 of 332 posts

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#281
post #39

Planting floating seaweed forests seems like a more feasible thing to do at scale. It might even help with marine ecology.

I agree, in addition to planting trees.

Eg https://medium.com/invironment/an-army-of-ocean-farmers-on-t...

Also floating solar, with compressed-air energy storage in under-sea airbags (could work on hydro reservoirs too)

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#282

  Australia has announced a plan to plant a billion more by 2050 as part of its effort to meet the country’s Paris Agreement climate targets.
Laudable, but a tiny fraction of the 1.2 trillion mentioned as offsetting a decade of co2, and over a period of 3 decades.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#283
post #250
post #144

Earlier quoted context omitted.

This is total non-sense. There are so many deserted areas in the US and all over the planet -where radiance is actually a lot higher- where to install solar panels.

Transmission losses are not negligible, so power generation generally needs to be near people. If the power could be used to create and concentrate ammonia, much of needed generation could be shifted to farms. Of course farms have other uses for sunlight, so wind is a better choice there. Generating ammonia with wind power eliminates the problem of intermittent availability. You only produce ammonia when there is pow…

Making your transmission line a lot longer doesn't scale your losses by that much surprisingly. The main transmission losses are at the conversion points and in the utility voltage cabling at the end, having long distance interconnects really only loses a percent or two over having short ones.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#284
post #115
post #46

A good way to take part in increasing the number of trees, if you own your own home, is to improve the state of your shade trees. The trees absorb atmospheric carbon while also reducing home temperatures in summer, which in turn reduces the electricity people use for cooling. (And you save money!!) So a shade tree is a particularly effective way to reduce both atmospheric CO2 and electric bills. You might think of sh…

Where do you live where shade trees are a thing?

Semi-arid region here, it can be 95 degrees out and you fry in the sun like an egg, but under a shady tree it can be comfy & breezy. Shade trees are extremely valuable here.

Although not everyone is onboard. To be sure, there are still drab boxy houses with nothing but lawn that run their sprinklers every morning and the A/C all day. Preferable to spending two hours a year raking up leaves in fall, I'm told.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#285
post #188

Earlier quoted context omitted.

I'm fortunate enough to have a pond and some marshy area bordering my house. My neighbors sometimes wondered why I don't trim it up and make it look "nice" right up to the water like some folks do. I like it wild, lots of trees and wildlife. I even let the wildness take a bit more of the yard than when i moved in. A few big trees quickly sprung up, no maintenance (compared to a yard) it looks great wild. Perhaps if o…

> A few other neighbors who were maliciously caring for their lawn I think you meant meticulously, but it works either way. :)

It gets malicious real quick when they invoke the power of the HOA to force you to tame the wilderness in your back yard. :(

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#286

Earlier quoted context omitted.

It seems incredibly practical to me. I've seen a quote for 40 dollars to plant a thousand trees. That's something like 50 billion to offset a decade of global warming? Doesn't sound so bad. Spread the cost out worldwide, 5 billion a year, split between a few big countries? http://forestandrange.org/southernpine/magement/planting/rea...

I don't think planting trees is the biggest issue. Access to water is. More practical solution would be to fill some desert with sea water and grow plankton, kelp etc.

I don't think planting trees is considered to be the unquestionably most practical solution. But it's a simple solution that people can do on their own, and it has a lot of other side benefits like habitat, shade, & proven health benefits in humans.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#287

Earlier quoted context omitted.

How hard is it to plant a tree? Especially if it's young and there is very clear guidance as to which native trees should be planted in which contexts you have available to you locally (account for full size growth and sunlight / water needs). If over one year everyone planted 3 trees per week, and we employed a work force of people to cultivate them further, we would make a huge dent in our catastrophic risk exposur…

It is not difficult but doing it without the right machinery requires back-breaking labor. It looks like this: https://www.youtube.com/watch?v=uUzeruQT8xE I did it one full weekend and I was totally exhausted. Of course, there exists machines to do that, but then you can't have every person in the world chipping in. But planting is just the first step. If you own a growing forest it needs to be culled periodically, m…

That video is what you consider back-breaking? I planted ten trees on my property with a mattock & shovel over the course of two weeks, removing maybe fifty gallons of clay for each hole, and while it was hard I wouldn't describe it as back-breaking. You'd also adapt to it as you got stronger...

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#288

Australia has announced a plan to plant a billion more by 2050 as part of its effort to meet the country’s Paris Agreement climate targets. Laudable, but a tiny fraction of the 1.2 trillion mentioned as offsetting a decade of co2, and over a period of 3 decades.

They are 0.35% of the world population, and that's 0.08% of the 1.2 trillion trees, so they're actually within an order of magnitude. And in their defense they have no water.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#289
post #57

But, wait... some places are clearing forest for solar farms. Georgetown https://www.washingtonpost.com/opinions/2019/04/01/georgetow... Rhode Island https://www.providencejournal.com/news/20190414/proposed-ri-... Prineville Oregon(I dont' know how many trees will be cleared for this, maybe it will be on existing farmland) https://www.oregonlive.com/silicon-forest/2018/07/massive_so...

Regarding RI, your article is by no means the full picture nor clear support for your over-claim. 1) The biggest solar farm we're vying for here in RI is going to be in a disused industrial zone, not in a forest. 2) The article you linked is mostly about protecting forests proactively, not about a specific project and how it cleared the forests. 3) Speaking as one who drives the state constantly, there is actually very little utility scale solar. It's mostly turbines, there is solar here and there but it's usually adjacent to roads or structures or on rooftops, we have very few large solar farms due to our higher focus on wind and energy efficiency.

Overall, you're over-reaching with the RI claim that we're clearing forest for solar farms, as I've been local for decades and seen no evidence of that.

Re: Planting 1.2T Trees Could Cancel Out a Decade of CO2 Emissions

#290
post #2

That's a lot of trees though and it cancels out only a decade. EDIT: I just looked it up: there are roughly 4-10 trillion trees on earth right now.

That is a lot of trees, but a decade’s worth is a lot of emissions

Indeed, we don't talk about the absolute numbers a lot but reportedly more than half of all CO2 emitted by human industrial activity has been released since 1988. So our current per-decade pace of emissions is truly colossal, historic, unprecedented, pick your term.
Post reply on HN