Last week, we discussed the IPCC's depressing (but not surprising) report about the need to take action now to curb climate change. In the coming weeks, we'll focus on some possible solutions. A study published last year warned that all the scenarios for keeping global temperature rise to 2C require “negative emissions” — wrangling CO2 from the atmosphere one way or another and burying it on land, underground, or in the oceans.
Direct Air Capture
What Is It?
One of the most promising technologies for reducing emissions is called Direct Air Capture (DAC). DAC devices are often described as "artificial trees" that suck carbon out of the air — the carbon can then be stored underground or used to make fuel. Some estimates suggest that this method could sequester all the CO2 emitted at our current rate, although it still needs to overcome some major practical and financial obstacles (the tech is still pretty pricey — think $600 per ton of carbon).
So How Realistic Is This?
It's getting there. Companies are beginning to come up with inventive ways to make DAC profitable and more widespread. Global Thermostat thinks they can bring the price down to $50 per ton by taking CO2 out of the atmosphere and selling it to soda companies to use both as "green bubbles" and as a raw material to make plastic bottles. 400 Global Thermostat plants could remove the equivalent of 60 million cars' worth of CO2 from the atmosphere.
The company Carbon Engineering plans to use captured CO2 as raw material for producing synthetic fuel, which could replace diesel, gasoline, and jet fuel. Synthetic fuels require electricity, hydrogen, and CO2 — by getting electricity from renewable sources, using CO2 from the air, and obtaining hydrogen from solar-powered electrolysis, it's possible to produce a very "low-carbon" fuel. The company calls the process "air to fuels" (A2F), and hopes to go commercial in 2021.
Why You Should Care
Michael Che, talking about the IPCC report on Saturday Night Live last week, said he thinks people continue to react to climate change with a shrug because "they keep telling us we’re gonna lose everything, and nobody cares about everything, people only care about some things. Hey, Fox News readers, what if we told you all the flags and Confederate statues would be gone? White women, your yarn is gonna disappear forever! That means no socks for your shiba inus!"
And it's true. Climate change still feels abstract and far away, despite the warnings. But it won't feel that way forever.
Obviously the simplest solution for curbing climate change is to stop emissions in the first place and alter how our society interacts with the world on a fundamental level, but how likely is that? Although none of these "negative emissions" solutions are mature enough to use yet and some aren't proven to work at scale, if politicians continue failing to act, and people refuse to change their habits, technology like DAC becoming profitable may be our last hope.
Take To The Streets
What's Going On?
We need to demand action from our local, state and federal leaders and from ourselves to prevent "ecological and social disaster." Here are some steps to demand that action:
- Know where your representatives stand. The US now has one of the most anti-science congresses in history. More elected officials in the Senate and House of Representatives don't believe in climate change than do. Here is a list of all the climate change deniers in Congress. Call, email, write to your representatives and most importantly, VOTE. Check out the list of who the Sierra Club endorses on the federal level, and get informed about the most important environmental issues in your state here.
- Look to your state and local government first. Together, cities and states may be able to do more than the federal government. Your mayor and governor matter more if you want clean energy in your community. Here is a good guide on addressing climate change in your community.
- Take personal responsibility. Drive less, take public transit, walk more. Eat fewer animal products and waste less food. Stop using disposable goods. Make your home more energy efficient and switch to a socially responsible bank. Overall, change your behavior so you aren't supporting corporations or organizations that damage the environment. It all adds up, and it might make you feel good too!
Bill Gates breaks down what he is doing to help.
What's Going On?
An urban farming renaissance is blooming in Paris. Strawberries are grown in shipping containers and kale is harvested on department store rooftops. The mayor of Paris, Anne Hidalgo, is leasing public land at a discount to agricultural ventures, hoping to turn 30ha of the city into urban farms by 2020. Urban agriculture is sprouting up in many cities — from Detroit to London to New York, but could be most useful in poor agricultural areas like Dubai. Urban farming reduces food miles, makes cities cleaner and more attractive, absorbs carbon dioxide, and recycles water and food waste. Researchers estimate that city farms can produce 10% of the world's vegetables, roots, and legumes, in addition to reducing floods and lowering energy use (soil on rooftops provides insulation). Urban agriculture can't completely replace the current food system, but it can play a significant part.
Beer supply is threatened by heat and drought.
Dandelion seeds fly using ‘impossible’ method never before seen in nature.
Salmon skin up-cycled?
Brazil's next president threatens reforestation efforts.
Renewable energy is favored by both Democrats and Republicans.
UK creates arctic wildlife refuge.
Why aren't more Americans buying electric vehicles?
Microplastics found in 90 percent of table salt.