Although the past 12 years have seen the warmest 10 years on record, temperatures have remained fairly steady, even while CO2 emissions grew by nearly a third. Temperatures should have been increasing during this period, rather 1998 was tied with 2010 for hottest on record. Now a
study suggests why (pdf): sulfur emissions from Asian coal plants (China mostly) are so high they mimic the effects of a volcano which can cause short term cooling by reflecting light back into space. Insidiously, the long-term warming caused by CO2 (coal) has been masked by short-term cooling of sulfur (coal).
posted by stbalbach
on Jul 5, 2011 -
85 comments
"The world’s oceans have been experiencing
enormous blooms of jellyfish, apparently caused by overfishing, declining water quality, and rising sea temperatures. Now, scientists are trying to determine if these outbreaks could represent a “new normal” in which jellyfish increasingly supplant fish.. Total jelly domination would be like turning back the clock to the Precambrian world, more than 550 million years ago."
posted by stbalbach
on Jan 13, 2011 -
69 comments
NASA has some
new maps showing air pollution around the world. It shows PM
2.5, that is, Particulate Matter less than 2.5 micrometers in size, small enough to get past normal bodily defenses and cause health problems.
[more inside]
posted by stbalbach
on Sep 23, 2010 -
32 comments
"I don't see any future for whale species except extinction." A
report (pdf) released Thursday by
Ocean Alliance noted high levels of cadmium, aluminum, chromium, lead, silver, mercury and titanium in tissue samples taken by dart gun from nearly 1,000 whales over five years. Concentrations of chromium found in some whales was several times higher than the level required to kill healthy cells in a Petri dish. Mercury in some whales was 16 times higher than a typical shark or swordfish, both known for their high mercury levels.
Beyond whales, "You could make a fairly tight argument to say that it is the single greatest health threat that has ever faced the human species."
posted by stbalbach
on Jun 24, 2010 -
68 comments
Global Dimming. Records show that over the past 50 years the average amount of sunlight reaching the ground has gone down by almost 3% a decade. "It's an extraordinary thing that for some reason this hasn't penetrated even into the thinking of the people looking at global climate change. It's actually quite a big deal and I think you'll see a lot more people referring to it."
posted by stbalbach
on Dec 19, 2003 -
15 comments
