World's most dangerous nuclear reactor?

An article today in National Geographic Daily News discusses a nuclear reactor located in Armenia, which may be the most dangerous nuclear reactor in the world.

Two facts come together to raise the risk of this power plant. One is the design - unlike most nuclear power plants, this one has no primary containment structure. The second is the proximity to geologic active faults, an area of high seismic activity that could potentially shake the reactor to the point of breaking.

2010 tied 2005 & 1998 for hottest year on record

2010 was a hot one.

The World Meteorological Organization released their analysis today that the average global temperature on Earth in 2010 tied 2005 and 1998 as the hottest year on record. BBC News ran a story today hitting the highlights.

Human induced climate change is a topic that stirs up lots of emotion and debate. I think there should be lots of debate - but not on the topics where it usually is found. The debate is usually framed as "pro" or "con", "for" or "against" the science itself. The debate about whether the Earth's average annual temperature is actually rising, however, is not the place for it. The data are abundantly clear that it's getting hotter out there.

Where the debate should lie is not with whether the science is right or wrong - the numbers are what they are, and arguing against them is a poor position to take. The science of climate changing is solid evidence, and the answers are pretty clear. Rather, the debate should lie entirely with what should be done about it. This is where the question leaves science and enters the world of economics, public policy, cost-benefit analysis, and ultimately values. And the answer to this question is not straight-forward. It is complex & mind bogglingly detailed, and needs many engaged, thinking minds to work on it. Unfortunately, a sober, intelligent debate on the "what should be done" is not where our society is yet, and instead it is the science that is vilified or twisted.

GIANT snow cones & slushie machine at Yosemite

I think every kid loves snow cones & slushies.  I still remember the Snoopy Snow Cone maker from when I was a kid!  That was a fun toy.  Nowadays, of course, a Snoopy Snow Cone maker has lost some of its charm that it held when I was a kid.  But I've just today come across a video made by Yosemite Natl. Park that highlights what can only be described as Nature's Giant Slushie Machine.  It is really impressive & interesting footage here, bringing out a sense of wonder - kind of the same feeling of excitement and amazement I had as a kid when seeing Snoopy pump out that delicious treat, only this time it's a deeper level of awe.  Check it out, from Yosemite Natl. Park's YouTube channel.

thirst for water

Back on Nov. 2, Green Inc. blog posted an article describing the amount of sealevel rise that can be attributed to human use of groundwater.  The story summarizes some recent publications that suggest that 25% of the rise in sea level seen is due to pumping groundwater.  The idea is simple - we dig wells, pump out ground water, use that water for agriculture etc., and then it drains eventually into the ocean.  But the magnitude of this effect had not been estimated previously.  Many areas of the world grow food using ground water - and unfortunately we are discovering that this is an unsustainable process, because the groundwater is not being recharged as quickly as we are pumping it out.  Eventually the removal of all that water from the ground will run the tap dry - at least in some areas locally or regionally.  And if the water runs out, and there is no other source, and the food doesn't grow, and there is nothing to eat, .... well it ain't pretty.

Rare Earths Indeed

Today the New York Times has an article on Rare-Earths.  No, not planets - elements.  The group of elements known as Rare Earth Elements (REEs), otherwise known as the Lanthanides.  REEs are found way down near the bottom of the periodic table - in that strange extra couple of rows that are usually ignored by people who aren't into chemistry.  Below the REEs are the actinide elements - which include the two highly radioactive elements Uranium & Thorium.

But REEs are extremely useful elements, having many different commercial applications - computer memory chips, superconductors, fiber optics, lasers, and many others.  However, access to REEs has been extremely limited in the past year since China, which mines ~95% of the world's REEs, imposed a ban on exporting these valuable elements.  The article in today's NYTimes is on the discovery that certain nodules at the bottom of the ocean - called manganese nodules - many contain REEs, enough to make them profitable for mining.

Manganese nodules have been known about for decades - they occur as small little balls of rocky material at the ocean floor, roughly the size of a softball.  Access to them, however, is technologically difficult, and mining them for, guess what, manganese, has not been terribly successful financially.  The presence of REEs in these nodules, however, might push them over the top economically.

If these do become economically profitable, it would be a new source for these valuable elements.  However, mining the deep seafloor is costly, not only in dollars, but in potential environmental damage to marine life, and also in terms of international relations.  After all, who owns the seafloor?  Who has the rights to mine it?  These questions will continue to be driven by our thirst for goods.

Drilling for Past Climate in an Arctic Lake

Wired Science from a couple of days ago has a story on drilling in an arctic lake.  Here's my quick synopsis: the lake is at extremely high latitude, above the Arctic circle, and is extremely remote - the nearest town is about 55 miles away.  The lake was formed 3.6 million years ago by a meteorite impact - it is an old crater, now filled with water.  But the drilling in this lake has nothing to do with the meteorite, or some natural resource - the drilling is being done in order to learn more about how Earth's climate has changed in the past ~3 million years.  The lake sediments at the bottom record a near continuous record, giving scientists a fantastic window into understanding how the Earth has warmed and cooled in that time period.   The core collected from the lake sediments also contains at least 10 layers of volcanic ash, erupted over time by a nearby southerly volcano.  The core will be compared to other cores from different areas to understand what can be gleaned from it about Earth's climate.

trouble again in Indonesia

The Christian Science Monitor has a decent summary article today of the twin natural hazards that have struck Indonesia within the last week.  Monday, a magnitude 7.7 earthquake struck the west coast, generating a tsunami.  On Tuesday, Mt. Merapi erupted.  The total who have perished so far is reported at 131.  The volcano seems poised to continue erupting as it is for a while.  Unfortunately, the recent earthquake is not believed by seismologists to have eased the stress that has been building along the fault line, and another, potentially 8.5 magnitude superquake, remains a possibility.