This book should be required reading for all of modern society. Personally, it opened my eyes to the urgency of the ongoing climate crisis. You see, I had been in climate denial. I knew that humans cause global warming but I had somehow dismissed the fact that it’s getting worse and will get much worse.
Thanks to this book, I know how it will go if we don’t stop emitting CO2 as soon as possible and I am freaking out. But as Kimberly Nichols points out, we can fix it, by everyone doing their part. Which boils down to the three big things we all need to do: fly less, drive less, eat less meat. Of course you can do more. But if you’re not making an effort in these three specific ways, you’re kidding yourself.
Here are some, for lack of a better word, highlights:
- We are emitting a lot of CO2 these days (mostly due to burning fossil fuels), and much of it is staying in the atmosphere. Nature cleans up about half of our emissions, though not exactly for free. About a quarter is used by plants on land for photosynthesis (which is great), and about a quarter is absorbed by the ocean (which has pretty bad consequences of its own). And the remaining half? It stays in the atmosphere and contributes to what we all now know as global warming.
- Apparently, unless we take action, it’s going to get much much worse. Remember the oceans absorbing a quarter of the CO2? When they do, they also become more acidic, which will lead to the collapse of marine ecosystems. We’ll have food shortages because growing basic staple grains will become very difficult. Many areas will have to abandoned due to extreme heat (southern USA, Northern Australia, India, to name a few.) Rising sea levels will wipe island nations and coastal cities off the map. Basically, we will drive ourselves to extinction.
- Right now with the Paris Agreement we are targeting 2 degrees of warming. If we don’t change how we emit CO2 today, we are projected to have 3.5 degrees of warming. It’s also interesting to consider that the Ice Age was “only” 4 degrees colder than pre-industrial temperatures. So you can imagine how 3.5 degrees of warming can change what the world looks like.
- Some loss is inevitable. The Great Barrier Reef is dying (which actually protected the coastline from storms and erosion, and was a nursery for much of marine life), and at 2 degrees of warming, it will be completely dead.
- No, we can’t do stratospheric aerosol injection (i.e. shooting tiny mirrorlike particles into the atmosphere in hope that they will reflect sunbeams and prevent warming), because 1) we would have to do it continuously forever, 2) the carbon would still be building up in the atmosphere and acidifying the oceans, which means the oceans would certainly die, and 3) we would never see the stars again. The obvious solution is the only solution: stop emitting CO2.
- There is a 97.1 consensus among scientists that global warming exists and that humans are the primary cause of it. At this point, it is an established scientific fact. It’s our job to communicate it to the doubters to get them started on their climate journey.
- For decades, fossil fuel companies have been leading misinformation campaigns. They’ve been trying to sow false doubt about science, and it worked (still works! I have met so many doubters.) For example, Exxon was paying for ads in high profile media that “science is uncertain, it costs too much to transition off of fossil fuels, it would be rash, etc.” Oil companies spend 29% of their advertising budgets to promote themselves as “green”, while they only in fact invest 3% of their capital in clean energy.
- 72% of global climate pollution can be traced to household consumption. (It is also a fact that a small number of fossil fuel companies are responsible for 70% of emissions. Both are correct, the fossil fuel companies are responsible for the production, whereas households are responsible for the consumption. The households are burning the same fossil fuels the companies are digging up.) So we absolutely can make a difference by making lifestyle changes.
- If we want to limit global warming to 1.5 degrees, we have the budget to emit 2.5 tons of CO2 per person per year by 2030. (By a quick Google search of my own, I found that a two-way flight from London to New York emits 1.7 tons of CO2. That’s already 68% of your carbon budget on a single round trip. Shucks.)
- The biggest actions you can do are going flight-free, car-free and meat-free (in that order). It’s okay if you can’t be perfect, but every effort counts. It’s important to keep in mind the 2.5 ton per person per year budget.
- It’s absolutely possible to convert car-centric cities into people-centric cities. Copenhagen’s transformation is one such example, as it was overrun by cars in the 1960s. They introduced policies that promoted biking (including building separated bike lanes) and they were wildly successful: in 2016, for the first time, more bikes than cars crossed the city. I’m looking at you, US.
- The biggest home energy use is to heat or cool things (heater, washer, dryer, AC). If possible, don’t use an AC or a clothes dryer, and try washing clothes with colder temperatures (trust in modern detergents!), etc.
- Livestock production is not sustainable at the scale we have it. Animal agriculture takes up 83% of farmland, produces 58% of agriculture’s CO2 emissions, 57% of its water pollution and uses a lot of water. Keeping animals is not inherently bad for the planet, in sustainable food systems, animals can turn waste (grass, leftovers) into resources (fertilizer, meat, leather, wool). The problem is that we have far too many of them. If we fed people with the food we grow for animals, we could feed an additional 4 billion people. Moreover, we are cutting down forests to replace it with farmland, including the Amazon, which is cut down to grow soy as animal feed.
- It’s also a good idea to be careful about whether you might be funding fossil fuel companies directly or indirectly with your money. What sort of bank does your money sit in, what ETFs are you investing in, etc.
- Voting for climate-enlightened politicians is very important, as they have the power to regulate problematic industries. Also apparently, it’s effective to write letters and e-mails to politicians (and demand for a plan for how they will stop warming below Paris temperature goals). Honestly, I don’t even know how to start with doing such a thing, so if anyone has a template to share, I would appreciate it.
- Participating in protests and strikes can make a difference. Spread the word! Only 25% of the population is needed to support a norm change, we can all be a part of this.