u/click-monster

SS: Heatwave exposure was consistently associated with higher levels of cholesterol and a blood sugar marker called HbA1c, both of which are components of the biological age measure used in the study, and together suggest a pattern of metabolic stress. Under the study’s strictest heatwave definition, each additional heatwave event was associated with the body aging roughly half a year faster than expected based on calendar age alone. The strength of this association varied across the different heatwave definitions researchers tested. Urban residents, people with higher body weight, and those in hotter southern regions faced stronger effects, pointing to clear groups at greatest risk.

Collapse-related because there's multiple heatwaves per year now?

A new scientific report on the state of the industry shows a growing gap between what we can do and what we need to do.

(Possible signup soft-content-wall but should be viewable in incognito window)

Submission statement: The third State of Carbon Dioxide Removal report (academic research project) was published this week. The report shows a huge gulf between net zero targets and reality, and how carbon dioxide removal (CDR) efforts are actually decreasing due to policy changes from big players such as the US. Some points from the linked article:

• The world currently removes approximately 2.2 billion tons of carbon from the atmosphere each year through intentional human activity, which is equivalent to about 5% of annual global carbon dioxide emissions.
• Less than 1% of the 2.2 billion tons comes from “novel” methods such as direct air capture, bioenergy with carbon capture, enhanced weathering, and biochar (the most common method)
• In total, novel forms of carbon removal have to grow to 70 million by 2030 and 360 million by 2035 for the world to achieve net zero and begin to reverse warming back down to 1.5 degrees Celsius this century, and that’s assuming the emissions curve starts to bend dramatically downward.
• Right now, the most optimistic expectation for how much the carbon removal industry will grow by that point, based on corporate announcements, is about 42 million tons per year by 2030. The capacity in the pipeline from projects that are under construction, however, amounts to just 8.4 million by 2030. At the country level, only about a third of national climate strategies even mention novel carbon removal methods.
• This isn’t impossible — other technologies like solar power and electric vehicles have achieved comparable growth rates. Unlike those solutions, carbon removal isn’t a useful product with an obvious market. It’s a public good, like waste management — and an expensive one, at that.
• Carbon removal funding is also highly concentrated, making the industry vulnerable to sudden shifts in policy and investment appetite. For example, Microsoft alone has made more than 80% of carbon removal purchases to date; then in April it confirmed it was pausing procurements, leaving behind major uncertainty over who, if anyone, will fill its role in the market. Similarly, most government funding for pilot projects to date has concentrated in three countries — the U.S., Sweden, and Denmark — but more recently the U.S. has dismantled much of its support.
• Direct air capture facilities removed just 1,500 tons in 2025, according to the report. All of that came from Climeworks’ two facilities in Iceland — Orca and Mammoth — and it’s significantly less than the roughly 40,000 tons these facilities were designed to capture each year.
• There are some bright spots in the report. Research funding, scientific publications, demonstration projects, public policies, and private investment in carbon removal are all trending up. It’s just that the results of these efforts — in terms of patents, projects under construction, and the amount of carbon being removed — are uneven.
• The overall picture remains deeply uncertain. The word “uncertain” appears over and over in the report, applying to such questions as:

>current and future public support for carbon removal

>feasible levels of scaling for different methods

>cost of removal for different methods

>the amount of carbon removal countries have pledged to do

>future emissions and the climate’s response to both emissions and removals

>how effective different CDR approaches will be in a changing climate

>what’s happening with the United States’ Direct Air Capture Hubs program

>how to measure geochemical methods such as enhanced weathering and ocean alkalinity enhancement