MESO-Rx
Anabolic Steroids
Climate Change
- Thread starter Michael Scally MD
- Start date
CdnGuy
New Member
Just watched and really enjoyed this Documentary.
How One Brilliant Woman Mapped the Ocean Floor’s Secrets
I think the OG cush strain might have helped getting into this Doc lol
How One Brilliant Woman Mapped the Ocean Floor’s Secrets
I think the OG cush strain might have helped getting into this Doc lol
The Measure of a Fog: Finale
Peabody Award-winning filmmaker Ian Cheney turned his lens on climate change. In just over 12 minutes, he explores the scale of the challenge facing humanity: scientific and technical, the emotional, psychological and political. Cheney doesn’t pretend to offer answers or specific solutions; he only seeks to shine a light into the fog, to look for shapes and patterns and ultimately to explore the many reasons why the problem of climate change is so difficult for humanity to even fathom, much less come together to solve.
“The very concept of ‘climate’ challenges the human mind,” Cheney noted at the outset of the series. “Its epochal timescales are difficult to fathom, its inner mechanics, rhythms and contours — they’re sometimes hard to discern, and even scientists are still trying to understand it all.
“Meanwhile,” he continued, “the changes we’re making to this immense, complex machinery — changes arising from a colorless, odorless gas tied to positive-sounding things like progress and growth and prosperity — it can all seem placeless and everywhere at the same time, both invisible and plain as day.”
Exploring and admitting to those tensions and ambiguities, Cheney suggests, is an important part of any conversation on where we go from here — perhaps the most important part. We hope you will find them useful as you continue your own discussions on this most crucial topic.
Peabody Award-winning filmmaker Ian Cheney turned his lens on climate change. In just over 12 minutes, he explores the scale of the challenge facing humanity: scientific and technical, the emotional, psychological and political. Cheney doesn’t pretend to offer answers or specific solutions; he only seeks to shine a light into the fog, to look for shapes and patterns and ultimately to explore the many reasons why the problem of climate change is so difficult for humanity to even fathom, much less come together to solve.
“The very concept of ‘climate’ challenges the human mind,” Cheney noted at the outset of the series. “Its epochal timescales are difficult to fathom, its inner mechanics, rhythms and contours — they’re sometimes hard to discern, and even scientists are still trying to understand it all.
“Meanwhile,” he continued, “the changes we’re making to this immense, complex machinery — changes arising from a colorless, odorless gas tied to positive-sounding things like progress and growth and prosperity — it can all seem placeless and everywhere at the same time, both invisible and plain as day.”
Exploring and admitting to those tensions and ambiguities, Cheney suggests, is an important part of any conversation on where we go from here — perhaps the most important part. We hope you will find them useful as you continue your own discussions on this most crucial topic.
[1912 ...]
Worst heat wave in decades will continue through the end of the week in Southwest
Worst heat wave in decades will continue through the end of the week in Southwest?
Sin City is sizzling in triple-digit heat this week. It’s the worst heat wave in the Southwest in decades, and cities are reaching record high temperatures, including Las Vegas, which peaked at 117 degrees Tuesday.
Mora C, Dousset B, Caldwell IR, et al. Global risk of deadly heat. Nature Clim Change;advance online publication. https://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate3322.html
Climate change can increase the risk of conditions that exceed human thermoregulatory capacity. Although numerous studies report increased mortality associated with extreme heat events, quantifying the global risk of heat-related mortality remains challenging due to a lack of comparable data on heat-related deaths.
Here we conducted a global analysis of documented lethal heat events to identify the climatic conditions associated with human death and then quantified the current and projected occurrence of such deadly climatic conditions worldwide.
We reviewed papers published between 1980 and 2014, and found 783 cases of excess human mortality associated with heat from 164 cities in 36 countries. Based on the climatic conditions of those lethal heat events, we identified a global threshold beyond which daily mean surface air temperature and relative humidity become deadly.
Around 30% of the world’s population is currently exposed to climatic conditions exceeding this deadly threshold for at least 20 days a year. By 2100, this percentage is projected to increase to ~48% under a scenario with drastic reductions of greenhouse gas emissions and ~74% under a scenario of growing emissions. An increasing threat to human life from excess heat now seems almost inevitable, but will be greatly aggravated if greenhouse gases are not considerably reduced.
Worst heat wave in decades will continue through the end of the week in Southwest?
Sin City is sizzling in triple-digit heat this week. It’s the worst heat wave in the Southwest in decades, and cities are reaching record high temperatures, including Las Vegas, which peaked at 117 degrees Tuesday.
Mora C, Dousset B, Caldwell IR, et al. Global risk of deadly heat. Nature Clim Change;advance online publication. https://www.nature.com/nclimate/journal/vaop/ncurrent/full/nclimate3322.html
Climate change can increase the risk of conditions that exceed human thermoregulatory capacity. Although numerous studies report increased mortality associated with extreme heat events, quantifying the global risk of heat-related mortality remains challenging due to a lack of comparable data on heat-related deaths.
Here we conducted a global analysis of documented lethal heat events to identify the climatic conditions associated with human death and then quantified the current and projected occurrence of such deadly climatic conditions worldwide.
We reviewed papers published between 1980 and 2014, and found 783 cases of excess human mortality associated with heat from 164 cities in 36 countries. Based on the climatic conditions of those lethal heat events, we identified a global threshold beyond which daily mean surface air temperature and relative humidity become deadly.
Around 30% of the world’s population is currently exposed to climatic conditions exceeding this deadly threshold for at least 20 days a year. By 2100, this percentage is projected to increase to ~48% under a scenario with drastic reductions of greenhouse gas emissions and ~74% under a scenario of growing emissions. An increasing threat to human life from excess heat now seems almost inevitable, but will be greatly aggravated if greenhouse gases are not considerably reduced.
The new research shows the 4.5C upper limit for climate sensitivity is real and means projections for global temperature rises cannot be reduced. The global temperature is likely to be 2.6C to 4.8C higher by the end of the century if emissions are not cut, according to the Intergovernmental Panel on Climate Change, or 0.3C to 1.7C if sharp emissions cuts begin in the next few years.
Ceballos G, Ehrlich PR, Dirzo R. Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines. Proceedings of the National Academy of Sciences. http://www.pnas.org/content/early/2017/07/05/1704949114.full
The population extinction pulse we describe here shows, from a quantitative viewpoint, that Earth’s sixth mass extinction is more severe than perceived when looking exclusively at species extinctions. Therefore, humanity needs to address anthropogenic population extirpation and decimation immediately.
That conclusion is based on analyses of the numbers and degrees of range contraction (indicative of population shrinkage and/or population extinctions according to the International Union for Conservation of Nature) using a sample of 27,600 vertebrate species, and on a more detailed analysis documenting the population extinctions between 1900 and 2015 in 177 mammal species.
We find that the rate of population loss in terrestrial vertebrates is extremely high—even in “species of low concern.” In our sample, comprising nearly half of known vertebrate species, 32% (8,851/27,600) are decreasing; that is, they have decreased in population size and range. In the 177 mammals for which we have detailed data, all have lost 30% or more of their geographic ranges and more than 40% of the species have experienced severe population declines (>80% range shrinkage).
Our data indicate that beyond global species extinctions Earth is experiencing a huge episode of population declines and extirpations, which will have negative cascading consequences on ecosystem functioning and services vital to sustaining civilization. We describe this as a “biological annihilation” to highlight the current magnitude of Earth’s ongoing sixth major extinction event.
The population extinction pulse we describe here shows, from a quantitative viewpoint, that Earth’s sixth mass extinction is more severe than perceived when looking exclusively at species extinctions. Therefore, humanity needs to address anthropogenic population extirpation and decimation immediately.
That conclusion is based on analyses of the numbers and degrees of range contraction (indicative of population shrinkage and/or population extinctions according to the International Union for Conservation of Nature) using a sample of 27,600 vertebrate species, and on a more detailed analysis documenting the population extinctions between 1900 and 2015 in 177 mammal species.
We find that the rate of population loss in terrestrial vertebrates is extremely high—even in “species of low concern.” In our sample, comprising nearly half of known vertebrate species, 32% (8,851/27,600) are decreasing; that is, they have decreased in population size and range. In the 177 mammals for which we have detailed data, all have lost 30% or more of their geographic ranges and more than 40% of the species have experienced severe population declines (>80% range shrinkage).
Our data indicate that beyond global species extinctions Earth is experiencing a huge episode of population declines and extirpations, which will have negative cascading consequences on ecosystem functioning and services vital to sustaining civilization. We describe this as a “biological annihilation” to highlight the current magnitude of Earth’s ongoing sixth major extinction event.
Similar threads
Sponsors
Latest posts
-
-
-
-
-
Wuhan Wansheng Biotechnology Co., Ltd. (USA, International)
- Latest: Missingintheabyss