- Jul 2024
-
tmurphy.physics.ucsd.edu tmurphy.physics.ucsd.edu
-
An examplein the energy domain demonstrates theabsurdity of indefinite growth in the physicalrealm.
for - absurdity of indefinite economic growth - energy projection example of recent energy trends
-absurdity of indefinite economic growth - energy projections - Energy growth has typically been 2–3% per year since early 1900's. - This is approximately equivalent to 10x each century - Present-day energy output is 18 TW and extrapolates to - - approx.100 TW in 2100, - approx. 1,000 TW in 2200, etc. - In 400 years, from today, we would exceed the total solar power incident on Earth - In 1300 years from today, we would exceed the entire output of the Sun in all directions - In 2400 years from today, we would exceed the energy output of all 100 billion stars in the Milky Way galaxy - This last jump is made impossible by the fact that even light cannot cross the galaxy in fewer than 100,000 years. - Hence, physics puts a hard limit on how long our energy growth enterprise could possibly continue
-
Another way to frame physicallimitations to growth is in terms of wasteheat, which is the end product of nearlyall energetic utilization on Earth.
for - absurdity of indefinite economic growth - waste heat projection example of recent waste heat trends
absurdity of indefinite economic growth - waste heat projection example of recent waste heat trends - At present, the waste heat term is about four orders of magnitude smaller than the solar term. - But at a growth factor of ten per century, they would reach parity in roughly 400 years. - Indeed, the surface temperature of Earth would reach the boiling point of water (373 K) in just over 400 years under this relentless prescription.
-
- Apr 2024
-
-
Die Dürren der letzten 20 Jahre waren schlimmer als in den 2100 Jahren davor. Bericht über eine klimahistorische Studie, die von den Isotopen in den Jahresringen von Eichen ausgeht.
-
- Mar 2024
- Jan 2024
-
www.theguardian.com www.theguardian.com
-
Zusammenfassender Artikel über Studien zu Klimafolgen in der Antarktis und zu dafür relevanten Ereignissen. 2023 sind Entwicklungen sichtbar geworden, die erst für wesentlich später in diesem Jahrhundert erwartet worden waren. Der enorme und möglicherweise dauerhafte Verlust an Merreis ist dafür genauso relevant wie die zunehmende Instabilität des westantarktischen und möglicherweise inzwischen auch des ostantarktischen Eisschilds. https://www.theguardian.com/world/2023/dec/31/red-alert-in-antarctica-the-year-rapid-dramatic-change-hit-climate-scientists-like-a-punch-in-the-guts
Tags
- sea ice loss
- Tony Press
- expert: Lesley Hughes
- The Largest Ever Recorded Heatwave
- Denman glacier
- Ice core records suggest that Antarctica is warming faster than the global average
- East antarctic ice sheet
- Southern ocean overturning circulation
- Antarctica
- Kaitlin Naughten
- British Antarctic Survey
- Nerilie Abram
- Abyssal ocean overturning slowdown and warming driven by Antarctic meltwater
- 2023-12-30
- Bellingshausen Sea
- Matt King
- Record low 2022 Antarctic sea ice led to catastrophic breeding failure of emperor penguins
- Recent reduced abyssal overturning and ventilation in the Australian Antarctic Basin
- Australian Centre for Excellence in Antarctic Science
- expert: Matthew England
Annotators
URL
-
-
www.theguardian.com www.theguardian.com
-
Ein Strömungssystem im südlichen Ozean, das man mit dem Golfstrom im nördlichen Atlantik vergleichen kann, hat seit den 90er Jahren um 30% Intensität verloren. Die Folgen dieser Entwicklung können dramatisch sein, unter anderem für die Nahrungsversorgung von Lebewesen im Meer und für die Erhöhung des Meeresspiegels. https://www.theguardian.com/science/2023/may/25/slowing-ocean-current-caused-by-melting-antarctic-ice-could-have-drastic-climate-impact-study-says
-
- Nov 2023
-
docdrop.org docdrop.org
-
on retrouve à peu près la même chronologie que pour les valeurs de la République euh la notion 00:58:49 de laïcité est quasiment absente des programmes scolaires jusqu'aux années 80 euh en fait c'est une nonnotion hein en école et en collège alors la seule notion elle apparaît euh donc en 85
-
le premier article sur les discriminations en France c'est 94 dans Code pénal c'est 00:56:25 l'article 2251 du code pénal qui n'existe pas avant 94 donc il y a vraiment des j'allais dire des échelles de temps qui sont assez différentes dans ces valeurs
-
-
www.theguardian.com www.theguardian.com
-
Die englische Regierung hat in der letzten Oktoberwoche 27 Lizenzen zur Öl- und Gasförderung in der Nordsee vergeben. George Monbiot konfrontiert diese Entscheidung mit aktuellen Erkenntnissen zum sechsten Massenaussterben und dem drohenden Zusammenbruch lebensunterstützender Systeme des Planeten https://www.theguardian.com/commentisfree/2023/oct/31/flickering-earth-systems-warning-act-now-rishi-sunak-north-sea
Tags
- study: Observationally-constrained projections of an ice-free Arctic even under a low emission scenario
- study: The South American monsoon approaches a critical transition in response to deforestation
- study: Warning of a forthcoming collapse of the Atlantic meridional overturning circulation
- study: Future of the human climate niche
- topic: tipping points
- study: More losers than winners
- 2023-10-31
- actor: Rishi Sunak
- study: Climate Endgame
- study: Recent reduced abyssal overturning and ventilation in the Australian Antarctic Basin
Annotators
URL
-
- Feb 2021
-
cherrycreekschools.instructure.com cherrycreekschools.instructure.com
-
why don't the teachers look at this and see that the cause is racism?
Tags
Annotators
URL
-
-
www.reddit.com www.reddit.com
-
Time: Suppose all your data was immutable, then cache all the data indefinitely. But this isn't always to case so you have to figure out what works for the given scenario (A person's mailing address doesn't change often, but their GPS position does).
-
- Nov 2020
-
github.com github.com
-
This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
-
- Jan 2017
-
www.tryscribble.com www.tryscribble.com
-
new Bulgarian Training System
-
the details of an incredible new training system that had been developed over the last ten years
-