Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×

Submission + - Leading philanthropic foundations can create climate "tipping point" (rtcc.org)

mdsolar writes: In the largest and most international declaration ever published by environmentalists, 160 winners of environmental prizes from 46 countries, have today called on the world’s foundations to use their financial power to fight global warming.

In an appeal published in the International New York Times they call on foundations and philanthropists to dig into their endowments to create a tipping point in climate action – “to trigger a survival reflex in society.”

The world’s philanthropic foundations own endowments worth hundreds of billions of dollars.

They invest those endowments to generate returns from which they can pay out grants or make loans. They use these to fund a multitude of causes, but as things stand only a minority tackle climate change, either as part of their mission or as their major focus.

Yet climate change is the issue that is arguably the single biggest threat to civilization.

Comment Fresh water freezes faster than salt (Score 5, Informative) 635

"Here we show that accelerated basal melting of Antarctic ice shelves is likely to have contributed significantly to sea-ice expansion. Specifically, we present observations indicating that melt water from Antarctica’s ice shelves accumulates in a cool and fresh surface layer that shields the surface ocean from the warmer deeper waters that are melting the ice shelves. Simulating these processes in a coupled climate model we find that cool and fresh surface water from ice-shelf melt indeed leads to expanding sea ice in austral autumn and winter." http://www.nature.com/ngeo/jou...

Submission + - Over 100 Swarthmore Students To Attend Climate March in NYC Next Weekend (swarthmore.edu)

mdsolar writes: It has been reported already in the NYT that students at Pace University (which is in NY) will be marching to urge the UN to get moving on climate change, but students from neighboring states are planning to be there in numbers as well.

"Over 100 Swarthmore students will travel to New York City to attend the People’s Climate March this Sunday, September 21. Swarthmore Mountain Justice has partnered with Earthlust to organize bus transportation for Tri-Co students and other community members who wish to attend the march, which is expected to draw 250,000 people.

Stephen O’Hanlon ‘17, of Swarthmore Mountain Justice, described Swatties’ attendance at the Climate March as a way to “show the power that [the divestment movement] has build through divestment campaignsaround the country.”

Hazlett Henderson ‘17, also a member of Mountain Justice, hopes that the march will renew enthusiasm for climate justice on campus. After the march, she said, “a lot of people are going to be very excited by divestment, because this is such a big gathering of people. It’s going to show how much support and how much energy there is surrounding this issue.”"

Hopefully the UN will listen since these are the people who will suffer if that does not happen.

Comment Re:Steam to extract oil that shouldn't be... (Score 1) 82

This kind of thing gives access to much more fossil carbon than is considered in most carbon inventories because there is no need for the process to produce energy from the fossil carbon. It can just be an energy transfer from renewable energy that won't run out, to buried carbon that that is too low quality to be a fuel on its own. If we consider using renewably generated hydrogen to mobilize the remaining carbon in spent source rock, there is more than enough carbon to make the earth's surface uninhabitable for mammals nearly everywhere. http://www.newscientist.com/bl...

Comment EROEI (Score 1) 82

This allows the Peak Oil argument that oil won't be extracted if the ratio of energy return on energy invested drops too low (usually below about 3) to be discounted. Values well below one can now be exploited. Additionally, source rock may be injected with renewably sourced hydrogen to get at carbon that normally would be completely immobile. Kharecha and Hansen attempted to look at the effects of Peak Oil on climate. http://pubs.giss.nasa.gov/docs... It appears they may have been seriously too optimistic. Exploiting source rock to mobilize all the carbon using renewable energy could lead to three or four doublings of carbon dioxide in the atmosphere. In essence, renewable energy provides the means to make most of the continents uninhabitable.

Comment Worship (Score 2) 937

One of the arguments for the existence of God is that we are inclined to worship. It is argued that we would not have this god-directed faculty if there were no object upon which to exercise this faculty. Apparently this article urges that hero worship be substituted. Charisma over reason....

Submission + - A social movement on climate change? (peoplesclimate.org)

mdsolar writes: The ozone layer was saved http://news.slashdot.org/story... without a huge amount of fuss. Scientists explained the problem to governments. Governments went to Montreal and came back with a treaty. The progress gets checked periodically and the problem gets fixed. There were certainly people writing letters to their representatives and there was a broad public health initiative to use sunblock but it is hard to say that change came through a social movement the way, for example, apartheid was defeated. But, on climate change, basically a scientific issue like ozone, an effort to spark a social movement has been long running. Al Gore's film and education campaign were an early effort. The StepItUp and 350.org efforts are more recent. And, Stanford recently decided to divest from coal companies, http://news.slashdot.org/story... reminiscent of the anti-apartheid movement. Now, a mass march is planned for September 21 in NYC to get the UN to do more on climate change with a film called "Disruption" released on line in concert with this effort. http://www.huffingtonpost.com/... Perhaps new combinations of social media, social movement and science will make a difference.

Comment Re:Fukushima too (Score 0) 444

Well, if you only want to consider what is temporarily in the air, we'd want to see if the lawn watering promoted be electricity use cuts normal dust concentration enough to reduce the overall load. Coal ash has raw chemical edges and is less healthy than dust from the ground for that reason. But the radiation aspect is unimportant. You can read more details here: http://pubs.usgs.gov/fs/1997/f...

Comment Re:Fukushima too (Score 1) 444

Actually, no. Fly ash has the same concentration of uranium as soil so it has no effect. Nuclear accidents release very dangerous fission products and a quite a different situation. Burning coal actually reduces radiation exposure because carbon-14 has all decayed in coal. Carbon from coal thus dilutes the carbon-14 in our food supply and thus us as well.

Comment Re:Renew this! (Score 1) 444

The hydrocarbon's use as a fuel is ended. As a fuel, it is destroyed. I mention that because the thread was not distinguishing between renewal and recycling.

"Stellar nucleosynthesis, quiescent or explosive, forge the whole variety of nuclei from C to U but LiBeB nuclei are destroyed in the interior of stars, except 7Li which is produced in AGB and novae. The destruction temperatures are 2, 2.5, 3.5, 5.3 and 5 millions of degrees for 6Li, 7Li, 9Be, 10B and 11B respectively. It is worth noting that 7Li and 11B could be produced by neutrino spallation in helium and carbon shells of core collapse supernovae, respectively [96], [91]; however, this mechanism is particularly uncertain depending strongly on the neutrino energy distribution. It is clear that another source is necessary to generate at least 6Li, 9Be, 10B and this is a non thermal mechanism, namely the break up of heavier species (CNO, mainly) by energetic collisions, also called spallation." http://cds.cern.ch/record/3933...

Slashdot Top Deals

You knew the job was dangerous when you took it, Fred. -- Superchicken

Working...