Overview: Global warming and climate change

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Authors: Derek Paul and Metta Spencer

This planet is gradually warming, mainly because of the burning of fossil fuels, which add heat-trapping gases to Earth’s atmosphere. The increased temperature changes the climate in other ways too, including the rise in sea levels; ice mass loss in Greenland, Antarctica, the Arctic and mountain glaciers worldwide; shifts in the times when flowers bloom; and extreme weather events.

Life on Earth is dependent on a layer of gases, primarily water vapor, in the lower atmosphere that trap heat from the sun, while radiating some of it back and keeping our planet at a temperature capable of supporting life.

The sunlight that remains trapped is our source of energy and is used by plants in photosynthesis, whereas the remainder is reflected as heat or light back into space. Climate forcing (or “radiative forcing”) is the differential between the amount of sunlight absorbed by Earth and the amount of energy radiated back to space.

Several factors determine the size and direction of this forcing; for example light surfaces are more reflective than dark ones, so geographical regions covered by ice and snow reflect back more than areas covered by dark water or dark forests; this variable is called the “albedo effect.”

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Paul Dowsett

Why are climate deniers so hostile to women? comment image
Here’s an article from The New Republic.

https://newrepublic.com/article/154879/misogyny-climate-deniers?fbclid=IwAR2dvYQ66CzooVCbU-s9gCAAzeZ86dpfBKJqiWjkHqr30mWjessS7SJDraccomment image?

Frank Sterle Jr.

In an interview by the online National Observer with renowned linguist and cognitive scientist (etcetera) Noam Chomsky, posted February 12 (2019), the latter emphasizes humankind’s desperate need to revert to renewable energies, notably that offered by our sun: “A very good economist, Dean Baker, had a column a couple of weeks ago in which he discussed what China is doing. They are still a big huge polluter, but they are carrying out massive programs of switching to renewable energies way beyond anything else in the world. [American] States are doing it. Or not.” … In Tucson, Arizona, for example, “the… Read more »

Adam Wynne

I have heard of an interesting initiative in India regarding the creation and use of plastic-based roads. A technology exists that allows old plastics – such as plastic bags – to be shredded and used alongside glue and tarmac to create durable roads. 1 kilometer of this style of “plastic road” uses the equivalent of 1 million plastic bags – and so far India has installed roughly ~33 000 kilometers of this road style. Using this plastic mixture additionally saves about 1 ton of asphalt for every 1 kilometer of road. It is additionally about 8% cheaper than a conventional… Read more »

We can save the world with no cost…

Richard Paul

Climate change is not smoke or mirrors..it is real and its coming to get us. Observe good scientiffic information coming from the brains of NASA.
CLARREO : a satellite that can help make our space based scientiffic instruments much more accurate and powerful.


And I thought he was just an action hero…

Adam Wynne

I read online that the Climate Action Summit at the United Nations began on 23 September 2019. I am curious if anyone is calculating or tracking the various ecological impacts (emissions, etc.) from this conference. Photos on social media indicated a large number of delegates from all over the world – as well as thousands of protesters. How many emissions are from the delegates flying or travelling in to New York for this conference? Surely some live near the city – but others are travelling thousands of kilometers to reach the conference. On the same note – does the protest… Read more »

Adam Wynne

Does the UN track country and region of origin for delegates, etc? This could be a start re: calculating this. It may be more difficult to calculate for the protesters – but not impossible – as many folks on social media share their experiences, etc. Is there an increased opportunity for teleconferences, etc. to mitigate climate impacts – with the advent of more integrated technology? It may not replace a face-to-face meeting and is vulnerable to hacking – but is surely not out of the picture for certain contexts.

I wonder if climate change doesn’t also have to do with the shifting of the magnetic poles…

Climate changes ID’d

Adam Wynne

Several nations have explored options of artificial islands to mitigate climate change and other political situations. One of the most famous at present is China’s activity in the South China Sea around the Paracel Island. Interesting, the Maldives constructed an artificial island via dredging a shallow area of sea several years ago. This allegedly is to mitigate congestion on the main capital island of Male. “A Flood-Resistant Island: You catch a ferry from a part of Male where motorcycles clog the narrow streets and fishermen gut their morning catch on the sidewalk. A few minutes later, you arrive in a… Read more »

Adam Wynne

Several urban areas have begun seawall construction to try and mitigate regional flooding and/or evacuation. Are there similar ecosystem options to mangroves for areas where mangroves are not native and/or the climate is not welcoming to them? Malé in the Maldives has begun an artificial seawall construction around the city – funded partly by Japan. New York has additionally begun investigating (if not constructing) systems to mitigate flooding on Lower Manhattan. Is there opportunity for a mix of artificial and natural seawalls and seawall alternatives? Other nations – such as Fiji (and potentially Kiribati and Tuvalu)- have begun looking for… Read more »

Frank Sterle Jr.

Whether it’s the mass deforestation and incineration of the Amazonian rainforest (which produces 20 percent of Earth’s oxygen), a B.C. midsummer’s snowfall, a vicious heatwave, a near-extinct whale species gradually dying off, unprecedentedly large-scale flooding or geologically invasive/destructive fracking or mass deforestation or increasingly dry forests resulting in record-breaking deadly wildfires in California and B.C. or a myriad of other categories of large-scale toxic pollutant emissions and dumps, there’s discouragingly insufficient political gonad planet-wide to sufficiently address it. Astonishingly, what apparently still politically matters most, or too close to it, is the seemingly euphoria-inducing creation of jobs, however temporary, and… Read more »

Howard Wells

I gained a huge amount of surprising knowledge from this extraordinary article. It explains how the whole carbon cycle works in nature and why we’re not going to run out of oxygen — though humankind is doing something terrible.

The Amazon Is Not Earth’s Lungs
Humans could burn every living thing on the planet and still not dent its oxygen supply.
By Petet Brannen. The Atlantic Aug 27, 2019

Paul Dowsett

The Green Old Deal. By William Hawes There are a lot of things to like about the recent resolution for the Green New Deal. The commitment to reducing greenhouse gas emissions, the acknowledgment of the catastrophic events that will occur if the world does not act soon- these are all healthy signs. Like Bernie Sanders’ 2016 campaign which removed many stigmas about socialism, raising public consciousness about the structural changes needed to lessen the impacts of global warming are to be commended. However, there are very serious problems with the language of the resolution, as well as the underlying assumptions,… Read more »

Remember the California wildfires…now we have the amazon wildfires…why are these fires happening all of a sudden. CNN is reporting on the situation and its looking pretty grim for global warming. We need trees because they convert carbon dioxide to oxygen, not to mention protect wildlife and provide the ecosystem they need to survive. Hopefully someone will develop a strategy for dealing with these catastrophic events so that action can be taken when something like this occurs. With all the incredibly technology we have we could at least help save some of our important worldly resources. How is fire fighting… Read more »

how Climate Change Could Trigger the Next Global Financial Crisis By Robinson Meyer . The Atlantic . 1 August 2019 “In other words, the success of the delaying tactics of the carbon lobby create a situation in which we’re then faced with the possibility of a sudden regulatory shock, something that really inflicts major losses.” Many ideas discussed in this outstanding interview with the financial historian Adam Tooze. “Tooze: I mean, that’s been the green-modernization agenda of climate politics, certainly in Europe, since the 1980s, right? This is not simply a zero-sum game; this is a structural transformation that has… Read more »

“Climate Reality” is the organization that Al Gore founded. They recently held a big conference in Minneapolis. It’s good to know that there is a branch operation in Montreal that is apparently run mostly by francophone youth. You can see the Canadian group on Facebook as “Climate Reality Canada / Réalité climatique Canada.”

Mark Fabian

‘This Is Not Normal’: Record-Smashing European Heat Wave Sparks Demands to Combat Climate Emergency
“The climate is changing. Use your voice, wallet, and votes to fight it.”

byJessica Corbett, staff writer

Adam Wynne

Are there still extensive wild fires throughout Europe? I heard they were particularly bad in Portugal among other regions.