Important.
This drives a lot of climate action fights on social media. Some folks think anything but “reduce fossil CO2” is a distraction. Meanwhile, 1/3 of emissions are from food systems.
Also beware “solutions” that reduce fossil CO2 but increase land use CO2 even more (eg crop-based biofuels).
With the discovery of 30% more world lithium resources in one year, battery-electric vehicle and stationary battery storage prices should continue to drop rapidly, facilitating world electrification and the inevitable transition to 100% WindWaterSolar across all energy sectors.
We have a pretty good understanding of the differences between GHG emission estimates, but when it comes to some sectors (e.g., land), estimates seem all over the place!
Why is this? @wflamb.bsky.social has you covered...
essd.copernicus.org/articles/18/...
1/
Single-panel chart. Scatter of annual seasonal drawdown amplitude (d) (green dots) from 1958 to 2024, ranging from about 4.5 to 7.5 ppm. A black quadratic fit line rises to a peak around 2009 then levels off, with a shaded 95% confidence interval. A vertical red dashed line marks the fitted peak year. The curve replicates the finding of Curran & Curran (2025).
6/ Worse still: the land sink may be plateauing.
The seasonal CO₂ drawdown in the Keeling Curve, a proxy for terrestrial sequestration, peaked around 2009 & has shown no growth since, a sign that the biosphere is struggling to keep up. Replicating Curran & Curran (2025) doi.org/10.1002/wea.7668
Two-panel chart. Top: total emissions (black trend line) and total sink (blue trend line) 1959–2024, with the widening orange gap between them representing CO₂ remaining in the atmosphere. The emission slope (+0.418) is roughly twice the sink slope (+0.230). Bottom: scatter of annual airborne fraction with a dashed upward linear trend and 95% confidence interval, with decade averages annotated: 0.35 (1960s), rising to 0.51 (2020s).
5/ In the 1960s, natural sinks absorbed ~two thirds of our emissions. Today they absorb barely half.
The sink is growing, but not keeping pace. So more of every tonne of fossil fuel burned now stays in the atmosphere, and that share is still rising.
your paper's answer and policy implications/recommendations has to be in the abstract please I beg of you
Nitrous oxide (N₂O) is sometimes called “laughing gas”
One less funny thing about N₂O is that it is a greenhouse gas ~273x more potent than CO₂
Lots of N₂O emissions are from agriculture
Nitrogen is essential for crop production but globally ~half of N applied to crops is lost to the environment!
If voters spurn BART in November, you've read about some pretty awful worst-case scenarios.
Guess what? They're worse than you thought.
From @esksf.bsky.social
missionlocal.org/2026/03/bart...
A dominant, persistent, and record-breaking heat dome.
This satellite animation shows the evolution of the ridge over the last 6 days.
Put a third way, growing corn for ethanol to move combustion vehicles around uses ~100 times more land than making solar electricity to move electric vehicles around.
I have a joke about carbon offsets but someone else is going to have to tell it to you and a third person is going to have to verify if it is funny while a fourth person argues that the second person was already going to tell the joke anyway
WindWaterSolar alone produced a year high 153.1% of demand for 5 minutes and 66.5% of 24-hour demand on 3/14/26 on the @CaliforniaISO grid
It was also the 50th of 73 (68.5%) days and 23rd straight days in 2026 with >100% WWS.
Fossil gas down now 61% in 2026 versus 2023.
Absurd heat! Despite our best efforts, the monster heat dome is bound to be "undersold" by the meteorology community. Why? Because intensity like this is almost never seen. This thing has the potential to be Epic for Mid-March, and not in a good way… 1/
Protecting (and restoring) peatlands is a powerful climate solution.
Check it out!
Drained peatlands were 35% of these cropland emissions!!
The EPA has repealed the landmark finding that climate change endangers lives.
"Ignoring the smoke doesn't quell the fire. Americans will get sicker, extreme weather will get worse, and our planet will get warmer if we don't rapidly curb greenhouse gas emissions." - @globalecoguy.bsky.social
A reminder: ICE vehicles waste a whopping 80% of energy in their fuel.
EVs are propelled by entirely different mechanisms. Energy enters the vehicle as electricity, which directly powers the drivetrain making it 3-4x more efficient.
Going car-free is the best thing most people can do for climate. To reduce car dependency, cities should promote car-free living, supporting compact cities through policy, and investing in public transportation, pedestrian and bicycle infrastructure, and shared mobility options.
Frightening new paper by leading planetary scientists warning of cascading risks in the #climate system 😱
www.sciencedirect.com/science/arti...
I previously explored the connectedness of key earth processes in this thread below 🧵
We don't know what's happening, but there's no good news here. As long as we keep burning fossil fuels, the world will continue to become more dangerous and chaotic.
New Nature study: “Under all modeled scenarios, including varying climate, electricity grids, and battery lifetime, battery electric vehicles reduce greenhouse gases relative to comparable internal combustion vehicles, including hybrids.” www.nature.com/articles/s44... h/t @coreybcantor.bsky.social
R.I.P Jon Kudelka @kudelka.bsky.social
“If I did a sequel it would probably involve a scientist swearing a great deal”
allouryesterdays.info/2025/04/28/i... @allouryesterdays.bsky.social
"Still No Miracles Needed" is out
Describes how to solve the climate crisis, and at the same time eliminate air pollution and safely secure energy supplies for all - without using miracle technologies.
web.stanford.edu/group/efmh/j...
Video
www.youtube.com/watch?v=JTDN...
if i could give one broad direction to people: stop being afraid of doing something. take some initiative. find a group near you. pick up the boxes that need hauling. bring food. take out the trash.
see a need that is unmet? get some friends together and do the thing.
organize your niche.
Globally, no single day in 2025 was cooler than its 1991-2020 average.
climate.copernicus.eu/global-clima...
In a newly published paper, we find that in 2025 human emissions of greenhouse gases added around 23 billion trillion joules of heat to the world's oceans – 39 times as much as the annual energy produced by all human activity on Earth. link.springer.com/ar...
Something that is not well understood by people who don't do master planned development at scale is the time dimension of the SLR problem. It isn't mentioned here:
It’s one of the wealthiest parts of the Bay Area — but can Marin fix its $17 billion problem? www.sfchronicle.com/climate/arti...
"If we're serious about carbon dioxide removal, it's going to be the largest thing humanity has ever done," says David Ho, a professor of oceanography at the University of Hawaii at Manoa and an expert on the marine carbon cycle. "It really should be something that governments pour effort into, like the Manhattan Project."
I'm like a broken record about this.
www.nytimes.com/2026/01/08/m...
not now, 240 toasters-sized asteroid
