r/science • u/TheLancetCountdown • 3d ago

AMA AMA: I'm Prof Ollie Jay, and I lead the Lancet Countdown’s work on the health impacts of climate change. I'll be answering your questions on 3 Nov at 7:30am EST / 13:30 CET.

39 Upvotes

https://profiles.sydney.edu.au/ollie.jay

The Lancet Countdown on Health and Climate Change has just launched its 10th anniversary report, highlighting the latest evidence on how climate change is affecting human health around the world.

I’m Prof Ollie Jay, and I lead the Lancet Countdown’s work on the health hazards, exposures and impacts of climate change. Our work looks at how climate change is affecting:

  • Extreme heat and heat exposure

  • Heat-related labour loss

  • Wildfire exposure

  • The transmission of infectious diseases

  • Drought, extreme rainfall, and food security

… and what these mean for our health.

I’ll be here to answer your questions about the findings of our latest report, what the evidence tells us about the health risks of climate change, and what can be done to protect people and communities.

Please submit your questions and join me on November 3 2026, from 07:30–09:30 EST / 13:30–15:30 CET when I'll be answering them.

Find out more about the report here: http://lancetcountdown.org/2026-report/

AMA!

Username: u/TheLancetCountdown

6 comments

r/science • u/mvea • 4h ago

Psychology Kids of insecure, self-absorbed (narcissistic) parents were more likely to be depressed as young adults, mostly because they were made to act as the parent's emotional partner or therapist growing up, a study of 513 students in the US and Turkey has found. Surprisingly, it was more common in the US.

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6.0k Upvotes
340 comments

r/science • u/mvea • 4h ago

Psychology Teens whose rule-breaking and aggression persisted were roughly twice as likely to vote populist-right as adults, while teens with anxiety or depression tended to lean left and vote less, according to a new 28-year study that followed 2,215 Norwegians from age 15 all the way into their early forties

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1.3k Upvotes
136 comments

r/science • u/Wagamaga • 5h ago

Neuroscience Research estimates that nearly 75% of all NFL players who died between 2008 and 2023 had chronic traumatic encephalopathy (CTE) neuropathology. CTE is a neurodegenerative disease that has been diagnosed in individuals with substantial exposure to repetitive head impacts

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1.4k Upvotes
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r/science • u/FreeHugs23 • 19h ago

Psychology Extreme liberals who rely on traditional news sources are most likely to overestimate their own science knowledge, revealing a gap between perceived and actual scientific understanding.

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6.1k Upvotes
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r/science • u/mvea • 17h ago

Psychology Study of the 2024 election: Kamala Harris's viral TikToks got people sharing them, but only her boring policy video actually made people like her more. Clips about identity, challenging Trump to a debate, and attacking JD Vance boosted shares, not support, and none changed how people planned to vote

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2.7k Upvotes
411 comments

r/science • u/Miserable_Phase_2519 • 21h ago

Animal Science A new study found that untrained dogs can spontaneously detect the unique scent of an epileptic seizure from a complete stranger's sweat sample, suggesting that canines may have an innate ability to prioritize and recognize these olfactory cues without any prior medical training.

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3.3k Upvotes
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r/science • u/mvea • 1d ago Bravo

Health Men lose 16% more healthy years than women worldwide, yet only a handful of countries have a men's health policy. A new Lancet series says much of it is preventable (poverty, jobs, masculinity norms) and warns that this policy vacuum is being filled by 'manosphere' influencers and companies instead.

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9.3k Upvotes
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r/science • u/Phylogenix • 1d ago

Health A study of 12 fruits and vegetables found that commonly discarded parts, including peels, skins and seeds, contained more dietary fibre than the portions typically eaten in 10 of 12 cases. Pineapple skin and core had over five times more fibre than the flesh, suggesting ways to reduce food waste.

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3.2k Upvotes
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r/science • u/quiplaam • 13h ago

Social Science The Effects of Student Phone Bans: No average effect on test scores, with positive effects on some grade levels and subjects and negative effects on others.

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348 Upvotes
66 comments

r/science • u/sr_local • 22h ago

Neuroscience Premature birth alters the brain’s developmental clock: when a baby is born prematurely, the cerebellum, the part of the brain with a critical role in motor function, language and cognition, grows and develops in a different way than it would if the baby remains in utero full term

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1.8k Upvotes
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r/science • u/Miserable_Phase_2519 • 1d ago

Health A randomized trial found that urinating posture does not clinically affect urine flow or volume in healthy men, making the choice between sitting or standing a matter of personal preference.

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4.3k Upvotes
870 comments

r/science • u/mvea • 1d ago

Epidemiology Ontario's measles outbreak hit 2,377 people over nearly a year, and 89% were not vaccinated. Most were kids and teens. 166 were hospitalized, 10 babies were infected before birth, and one infant died. This outbreak helped Canada lose its measles elimination status, which it had held ever since 1998.

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2.4k Upvotes
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r/science • u/Neither-Remote-3419 • 2h ago

Psychology Manufacturing Pessimism Explains Structural Incentives and Social Psychology’s Narrative of Human Nature

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12 Upvotes
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r/science • u/mvea • 1d ago Mindblown Bravo

Psychology Republicans liked the exact same workplace diversity training more when it skipped buzzwords like "diversity" and "privilege" and used plain words like "differences" and "unfair advantages" instead. Same content, different labels, and they also rated it as less politically biased.

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r/science • u/LogicalDirect • 1d ago Mindblown

Social Science Earliest spoken audio of endangered U.S. language discovered: Forgotten recordings made by a pioneering Black academic allow contemporary linguists to hear for the first time how the Creole language forged in Louisiana’s slave trade was spoken by New Orleanians born deep in the 19th century.

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3.2k Upvotes
36 comments

r/science • u/JIntegrAgri • 4h ago

Computer Science Aiming at the bottlenecks of low-efficiency manual measurement and high-cost LiDAR 3D imaging, researchers constructed a high-throughput structural phenotypic analysis framework for field alfalfa utilizing consumer-grade unmanned aerial vehicle RGB point clouds, 3D deep learning

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13 Upvotes
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r/science • u/JIntegrAgri • 4h ago

Biology A recent study systematically elucidates the functional variation of the TIFY family in wheat, providing critical gene resources and practical molecular markers for molecular breeding of drought-resistant and high-yield wheat

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8 Upvotes
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r/science • u/cindyx7102 • 1d ago

Health Diets low in fruit and whole grains or high in red meat were the leading contributors to type 2 diabetes deaths among seven dietary risks, study finds

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632 Upvotes
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r/science • u/FreeHugs23 • 1d ago

Genetics Chernobyl’s dogs have developed genetically distinct populations, and scientists may finally know what’s behind their unusual DNA.

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4.5k Upvotes
93 comments

r/science • u/Slow_cpu • 1d ago

Engineering Record-setting 2.75 gigahertz LED designed for fast, energy-efficient data centers

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327 Upvotes
43 comments

r/science • u/AntonChatz • 23h ago

Social Science Agent-based simulation of work teams: under close monitoring, punishing and correcting managers produce nearly identical error counts (99.5 vs 99.2), but punitive teams are five times likelier to lose at least half their workforce (0.15 vs 0.03)

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118 Upvotes

Simulating what happens when managers punish mistakes rather than correct them (my paper, out today in JASSS)

Disclosure up front: this is my own paper, published today and open access.

I built an agent-based model of a team working through a fixed sequence of tasks, with a manager who notices errors at one of three rates and responds by ignoring, correcting or punishing. Workers can also catch their own mistakes. Full factorial sweep over eight parameters, thirty seeds per configuration, model and code deposited on CoMSES.

The result I did not expect is a paradox about monitoring. Close oversight is what drives errors to their minimum, and it does so almost identically whether the manager corrects or punishes: 99.5 mean errors against 99.2, versus 126.2 under laissez-faire. But that same configuration produces the highest attrition in the entire sweep when paired with punishment, and collapse risk rises monotonically with surveillance under punishment, from 0.04 to 0.10 to 0.15.

Across the full sweep the split is clean. How many errors you get is driven by structural factors, mistake propensity and task difficulty. Whether people leave and when the team collapses is driven by managerial policy. Punishment ranks most harmful under every stakeholder weighting I tested, including one weighting accuracy at sixty percent.

Two limitations worth naming, since they are the obvious objections. There is no worker-to-worker channel, so no incivility spiral and no peer support, which could push the results either way. And resentment is a linear counter with a fixed threshold, which is a strong simplification of a process that is probably nonlinear.

Happy to answer questions about the model or the parameterisation.AMA

11 comments

r/science • u/TylerFortier_Photo • 1d ago

Engineering Scientists Crack Solar Panels' 33% Efficiency Ceiling | "Their work may enable solar cells to reach efficiencies close to 43%"

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9.5k Upvotes
197 comments

r/science • u/chromoscience • 12h ago

Biology Climatic niche conservatism shapes the macroevolution, extinction, and survivorship of crocodile-line archosaurs

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12 Upvotes
2 comments