A one-degree warming may cut world GDP by 20%

Today's r/science discourse converged on the mechanics of risk, regulation, and resilience—from the body's microbiome to national AI rules—threaded by a community testing evidence against lived experience. Across high-signal studies and spirited threads, the top posts reveal a platform balancing curiosity with pragmatic stakes.

Human health: early markers, modifiable risks, and the care ecosystem

Community attention gravitated to early detection and prevention, spotlighting a newly identified gut bacteriophage associated with colorectal cancer through the virus–cancer correlation in colorectal patients, alongside population-level evidence that past-year cannabis use in adolescence is linked to a doubled risk of psychotic and bipolar disorders. The day's health arc widened further with work tying negative social ties to a faster pace of epigenetic aging, underscoring how biology and behavior intersect across the lifespan.

"Colorectal cancer is on the rise in Millenials, and early detection is key to fighting it. Would be wonderful to have another (and less invasive) marker to test for."- u/DuncanYoudaho (1981 points)

Alongside biomarkers and risk factors, users probed the infrastructure of care—questioning quality, access, and cost—through a look at the surge of an unregulated ADHD coaching market with median rates near $150/hour. Mechanistic insights rounded out the theme with new evidence that sleep's metabolic drivers safeguard neuronal mitochondria, reframing rest as essential cellular maintenance rather than passive downtime.

Institutions, norms, and how governance actually works

Two threads recast how rules and recognition steer behavior: same-sex couples overwhelmingly choose marriage over domestic partnerships for legal clarity, social legitimacy, and commitment signals, while a nuanced read on China's AI governance emphasizes co-produced regulatory mechanisms involving the state, firms, and societal values rather than a monolithic top-down model.

"It's about equal rights and being seen as normal because they are. They just want to be themselves and not hide anymore."- u/Sanjuro7880 (100 points)

Taken together, the discussions show that durable norms emerge where rights are legible and oversight is socially embedded—not merely decreed. Whether navigating marriage's distinct status or calibrating AI guardrails, legitimacy flows from the interplay of law, market incentives, and cultural expectations.

Long horizons: climate economics, materials breakthroughs, and deep time

On the frontier of scale, r/science weighed macroeconomic stakes with modeling that 1°C warming could reduce world GDP by over 20% in the long run, while also spotlighting a materials advance via all-polymer nanocomposites achieving record-high energy storage up to 250°C, a potential enabler for power-dense, heat-tolerant electrification.

"I don't know if corporations know this, but increases in global warming over time actually would reduce the GDP by 100%. That's pretty significant."- u/Monster-Zero (38 points)

Discovery remained a throughline, with a new Spinosaurus species unearthed deep in the Sahara reminding readers that revising our map of the past can sharpen expectations for the future—whether anticipating climate shocks, designing better materials, or simply learning what we didn't know was there.

Excellence through editorial scrutiny across all communities. - Tessa J. Grover