Recent comments in /f/science
Icollectpropertytax t1_j6tvsvp wrote
Reply to Long-term exposure to even low levels of multiple ambient air pollutants, association with depression, anxiety by 9273629397759992
well pepeople get anxious and drepress over evrery lil thing nowadays so yea why not air pollution
[deleted] t1_j6tvlnb wrote
weinerweiner1 t1_j6tvlms wrote
Reply to comment by Billbat1 in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
Is this why men typically go to war?
crysco t1_j6ttpjv wrote
Reply to comment by Billbat1 in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
Hence why women and children are saved first.
thecoolestbitch t1_j6tteyr wrote
Reply to comment by return_the_urn in US Emissions of the World’s Most Potent Greenhouse Gas Are 56 Percent Higher Than EPA Estimates. Electric utilities are likely responsible for the nation’s higher than expected emissions of sulfur hexafluoride, a greenhouse gas 25,000 times worse for the climate than carbon dioxide. by Wagamaga
I also came here for this question. It's about 5x denser than air, wouldn't it just settle to the ground?
Fearlessleader85 t1_j6tt9d5 wrote
Reply to comment by FaceDeer in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
One ironic addition to this is another common issue is people often don't dig a big enough hole. They dig a small hole and put the tree as deep in it as they can. In truth, you want a big hole that can allow the roots to spread out the same way they naturally grow, but still have the boundary of the root/tree at the surface of the ground.
My parents, who have planted enough trees on their 40 acres, that it has affected their microclimate significantly, say if you buy a $10 sapling, dig a $100 hole. It needs to be both deep and wide. And if you have hardpan, you need to break through it.
ChemicalRain5513 t1_j6tsjci wrote
Reply to comment by clifbarczar in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
Which, even it biologically makes sense, is hypocritical. Can't have one without the other.
clifbarczar t1_j6tryyu wrote
Reply to comment by ChemicalRain5513 in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
This is also the reasoning some people use to bemoan female promiscuity while defending male promiscuity.
[deleted] t1_j6trtuu wrote
kruger_bass t1_j6trb0l wrote
Reply to comment by PuckSR in US Emissions of the World’s Most Potent Greenhouse Gas Are 56 Percent Higher Than EPA Estimates. Electric utilities are likely responsible for the nation’s higher than expected emissions of sulfur hexafluoride, a greenhouse gas 25,000 times worse for the climate than carbon dioxide. by Wagamaga
The biggest problem would be find a gas that do all that and isn't so problematic for greenhouse effect.
Fearlessleader85 t1_j6tqp5c wrote
Reply to comment by randomusername8472 in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
I think you're making an error in the implied assumption that the aforementioned land is all equal. It isn't. For example, there's a county of roughly 10000 square miles in southeastern oregon that has arouns 7000 people in it. It's got a little bit of protected area, but the VAST majority of it is cattle rangeland interspersed with hay/alfalfa fields. There's occasionally other crops, but not much. There's a lot of meat coming out of that country, but it's not dense. Every cow needs a massive amount of space to graze enough to slaughter, but that's because there's just not much out there. There's not enough water to sustainably grow food crops, but a cow can wander a few miles a day munching on bunch grasses and be fat and happy.
Additionally, a lot of rangeland is far closer to wild than farmland. Cattle are grazed on huge swaths of BLM land in the western US, that is essentially just wild land. To convert even 20% of that to any other use would be a massive ecological disaster. And the cows do some damage, too, but nothing like clearing forest and planting crops.
This use would DRASTICALLY affect any such statistics like the one you're quoting. Meat production on factory farms fed by monoculture feed crop field have their own problems, but they are far more space efficient than the story your numbers paint.
aurametrix t1_j6tp35r wrote
Reply to comment by arcytech77 in Scientists have shown for the first time that briefly tuning into a person's individual brainwave cycle before they perform a learning task dramatically boosts the speed at which cognitive skills improve. by Wagamaga
Nurosky headset is a little over $100, Muse are a little over $200. Open-source EEG devices ( OpenEEG) are under $100.
[deleted] t1_j6tntds wrote
Reply to comment by vibesWithTrash in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
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Youdontknowmypickles t1_j6tnsvr wrote
Reply to comment by squigeons in Social isolation is linked to classical risk factors of Alzheimer’s disease-related dementias by squigeons
Ah ok, and that makes perfect sense. You can feel alone in a room of people and feel great by yourself. Perception vs reality sort of argument. I think I’ll actually read this one, thanks!
Fearlessleader85 t1_j6tn2k1 wrote
Reply to comment by Spitinthacoola in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
The intensive ones are awesome to see, but not practical. Thd extensive ones won't have near the impact on local temperature of trees.
return_the_urn t1_j6tmrox wrote
Reply to US Emissions of the World’s Most Potent Greenhouse Gas Are 56 Percent Higher Than EPA Estimates. Electric utilities are likely responsible for the nation’s higher than expected emissions of sulfur hexafluoride, a greenhouse gas 25,000 times worse for the climate than carbon dioxide. by Wagamaga
It’s much heavier than air, so does it just like, stay close to the ground?
RRoyale57 t1_j6tmkcp wrote
Reply to Long-term exposure to even low levels of multiple ambient air pollutants, association with depression, anxiety by 9273629397759992
Ever walk into a smelly washroom? Changes your personality in 1 second.
Xrafice t1_j6tmda8 wrote
Reply to comment by kurt_go_bang in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
Anybody else find this discussion of voles, moles and quolls to be taking a toll?
Let's take a poll, do you think it's droll?
[deleted] t1_j6tli1s wrote
Reply to comment by Huntguy in US Emissions of the World’s Most Potent Greenhouse Gas Are 56 Percent Higher Than EPA Estimates. Electric utilities are likely responsible for the nation’s higher than expected emissions of sulfur hexafluoride, a greenhouse gas 25,000 times worse for the climate than carbon dioxide. by Wagamaga
One of the big selling points of SF6 equipment has been that it's more compact size and higher electrical efficiency, actually results in lower global warming, because the CO2 savings from improved efficiency outweigh climate effects from escaping SF6.
The counterpoint is that unless properly maintained the equipment may develop unacceptable rates of leakage - and that this may be happening in a widespread fashion.
That SF6 is a serious problem is well known - in the 1997 Kyoto protocol, it was named as 1 of the 6 main greenhouse gases, and it is regulated by governments across the world because of this. Extensive research into alternatives has also been performed since that time.
That SF6 is so good is part of the problem - it has proved extremely difficult to find alternative gases which have similar performance, and which could be used in similar equipment. The last 2 or 3 years have seen some significant progress, with a number of potentially viable alternatives being named such as 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile which is approaching commerically ready. The alternatives are much better, but have the disadvantage of toxicity, significant GWP (but nowhere near as high as SF6), and as perfluoro-compounds are potentially "forever chemicals".
Fearlessleader85 t1_j6tl1h1 wrote
Reply to comment by RagnarokDel in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
The problem with green roofs is cost and potential failure. It's actually very difficult to seal them, and when a leak does show up, it's difficult to fix. Trees tend to also be absolutely excellent at breaking through even concrete, so planting trees on roofs is asking for a problem.
Green medians can be a much more cost effective way to green up a city. Small rooftop gardens with potted plants or shallow beds with shallow rooted plants could help.
I would love to see 80' tall sycamores and maples on top of skyscrapers, but i don't think it's practical.
randomusername8472 t1_j6tkcf8 wrote
Reply to comment by tidho in Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
It is high! I was surprised too!
squigeons OP t1_j6thow3 wrote
Reply to comment by Youdontknowmypickles in Social isolation is linked to classical risk factors of Alzheimer’s disease-related dementias by squigeons
Good question, I'm not sure. They assess "perceived a d factual social capital" (how lonely do you feel vs. How often do you confide in ppl close to you" , which is along the same vein as your question. In this paper, feeling lonely, rather than actual loneliness, is more associated with Alzheimer's risk
SSLByron t1_j6thgrw wrote
Reply to comment by Defenestratio in Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
Hey now, country folk here are quite familiar with the notion of rootin' around.
clarenceismyanimus t1_j6tgmtb wrote
Reply to Planting more trees could axe summer deaths by a third. Modelling of 93 European cities finds that increasing tree cover up to 30% can help lower the temperature of urban environments by an average of 0.4°C and prevent one in three heat deaths as a result. by MistWeaver80
It's difficult for me to plant more trees when I don't want to block solar panels (espalier ftw!)
TikkiTakiTomtom t1_j6tw1u5 wrote
Reply to Endangered male northern quolls are giving up sleep in favour of having more sex – and it could be killing them, according to a study that investigated why male northern quolls usually mate themselves to death in one season while females can live and reproduce for up to four years. by MistWeaver80
But have you heard of quokka