Featured AffiliateGreen Energy News
Corals Threatened by Changing Ocean Conditions
January 12, 2015 09:20 AM - Woods Hole Oceanographic Institution
The lowering of the ocean’s pH is making it harder for corals to grow their skeletons and easier for bioeroding organisms to tear them down. Erosion rates increase tenfold in areas where corals are also exposed to high levels of nutrients, according to a study published January 2015 in the journal Geology. As sea level rises, these reefs may have a harder time growing toward the ocean surface, where they get sunlight they need to survive.
Is meaningful action to address climate change possible given our economic systems?
January 12, 2015 06:19 AM - , Triple Pundit
It’s increasingly obvious that the global economic system, and particularly the current brand of U.S. capitalism, are not really compatible with the actions needed to combat climate change.
Naomi Klein makes this point clear in “This Changes Everything,” which is both a passionate and controversial polemic and a reasoned discussion of the issues and forces stalling, and indeed preventing, a comprehensive response to climate change.
The problem is not the political and ideological divisions or scientific “debate,” which are hard enough to deal with — it’s mainly about money, according to Klein. The book’s subtitle is compelling: Capitalism vs. The Climate. Simply put: “Our economic system and our planetary system are now at war.”
Seychelles fossils illuminate temperature/ocean level relationships
January 9, 2015 05:39 PM - University of Florida via ScienceDaily
The balmy islands of Seychelles couldn't feel farther from Antarctica, but their fossil corals could reveal much about the fate of polar ice sheets.
About 125,000 years ago, the average global temperature was only slightly warmer, but sea levels rose high enough to submerge the locations of many of today's coastal cities. Understanding what caused seas to rise then could shed light on how to protect those cities today.
Global Warming "hiatus" connected to volcanic eruptions
January 9, 2015 02:36 PM - Lawrence Livermore National Laboratory
The “warming hiatus” that has occurred over the last 15 years has been caused in part by small volcanic eruptions. Scientists have long known that volcanoes cool the atmosphere because of the sulfur dioxide that is expelled during eruptions. Droplets of sulfuric acid that form when the gas combines with oxygen in the upper atmosphere can persist for many months, reflecting sunlight away from Earth and lowering temperatures at the surface and in the lower atmosphere. Previous research suggested that early 21st-century eruptions might explain up to a third of the recent warming hiatus.
Carbon capture and the UN Economic Commission for Europe
January 9, 2015 07:32 AM - EurActiv
The only way to limit global warming to less than two degrees is to combine renewable energy and energy efficiency with a large expansion in the use of carbon capture and storage, writes Christian Friis Bach. Christian Friis Bach is executive secretary and under-secretary-general of UN Economic Commission for Europe (UNECE).
I will admit that just a few years back I was very sceptical. Today I am convinced that we must do it. We must capture the carbon dioxide emitted from burning fossil fuels.
Oil prices tumble. Coal resources are vast. Large new gas reserves have been found. Fossil fuels will be with us for many decades and will continue to underpin social and economic development around the world. We need to invest heavily in energy efficiency and in renewable energy sources, but the only way we can hope to limit global warming to less than two degrees is to combine it with a significant expansion of the use of carbon capture and storage (CCS).
Which fossil fuels must remain in the ground to limit global warming?
January 8, 2015 08:58 AM - University College London
A third of oil reserves, half of gas reserves and over 80% of current coal reserves globally should remain in the ground and not be used before 2050 if global warming is to stay below the 2°C target agreed by policy makers, according to new research by the UCL Institute for Sustainable Resources. The study funded by the UK Energy Research Centre and published in Nature today, also identifies the geographic location of existing reserves that should remain unused and so sets out the regions that stand to lose most from achieving the 2°C goal.
Global Warming History Repeats Itself
January 5, 2015 02:21 PM - David Bond, The Ecologist
The Earth's current warming is looking similar to what took place 55 million years ago, writes David Bond. And if it works out that way, the news is good: we may avoid a mass extinction. On the other hand, the poles will melt away completely, and it will take hundreds of thousands of years for Earth to get back to 'normal'. It is often said that humans have caused the Earth to warm at an unprecedented rate. However researchers have discovered another period, some 55m years ago, when massive volcanic eruptions pumped so much carbon into the atmosphere that the planet warmed at what geologists would think of as breakneck speed. The good news is that most plants and animals survived the warm spell. The planet has experienced several mass extinctions - and this wasn't one of them. But there's a catch: even after carbon levels returned to their previous levels, the climate took 200,000 years to return to normal.
California drought hard on Chinook salmon
January 5, 2015 09:14 AM - Alastair Bland, Yale Environment360
Gushing downpours finally arrived in California last month, when December rains brought some relief to a landscape parched after three years of severe drought.
But the rain came too late for thousands of Chinook salmon that spawned this summer and fall in the northern Central Valley. The Sacramento River, running lower than usual under the scorching sun, warmed into the low 60s — a temperature range that can be lethal to fertilized
Chinook, the largest species of Pacific salmon, need cool waters to reproduce.
Tropical forests may reduce global warming rate
December 30, 2014 02:02 PM - UCAR AtmosNews
A new study led by NASA and the National Center for Atmospheric Research (NCAR) shows that tropical forests may be absorbing far more human-emitted carbon dioxide than many scientists thought. The study estimates that tropical forests absorb 1.4 billion metric tons of carbon dioxide out of a total global absorption of 2.5 billion, in response to rising atmospheric levels of the greenhouse gas. This means, if left undisturbed, the tropical trees should be able to continue reducing the rate of global warming.
Flavor and quality of wine impacted by Climate Change
December 30, 2014 09:07 AM - RP Siegel, Triple Pundit
It has been a challenge at times to get well-heeled and sometimes highly influential people to care about climate change. After all, having a great deal of money can serve to insulate someone from problems that afflict those less fortunate. Food prices going up, for example, not that big a deal. Coastal areas flooding out, go somewhere else for vacation. Many of those at the top of the heap are finding that business-as-usual is working very well for them, thank you very much. Besides, they might have significant investments in industries that could be threatened by changing to a more sustainable model. Perhaps, what is needed to get their attention is something that hits closer to home. Here is an item in England’s The Telegraph that might fit the bill: Apparently, rising temperatures in areas like France, Italy and Spain are affecting the flavor of certain wines.