When I was in grade school the teacher amazed us that the Romans were unaware that their pewter pots were giving them lead poisoning. I suspect that future folks will be amazed that we blithely put our food and water in plastic and immerse ourselves in a sea of radiation – and then we wonder where all the cancer is coming from.  Today I’m thinking about that sea of radiation.
I just read a note that Terahertz radiation (THz) – which is considered benign – actually disrupts DNA (Here’s the Technology Review article).
Obviously we recognize that some radiation is harmful. When the dental assistant X-rays your mouth they don’t exactly stand in front of the X-ray tube! But we live in a sea of other more subtle radiation: radio; broadcast TV; satellite TV/internet/etc.; cell phones; secondary radiation from power lines and electrical devices; and on and on. FWIW – most of the “sea of radiation” that I’m talking about is lower energy than Terahertz – here’s a diagram from the University of Virginia:
Terahertz wavelengths are about where it says “This Period” in the chart.
Terahertz (aka sub-millimeter) is the part of the spectrum between microwave and infrared – so it is lower energy than visible light. It is considered a safe alternative for medical imaging compared to X-ray, and it probably is! X-ray is a much higher energy radiation that ionizes some of the tissue it passes through.
But Terahertz does have an effect on living cells. It turns out that THz resonates with the atomic bonds that hold the two strands of a DNA molecule together – and can cause the strands to come unstuck in small “bubbles” – potentially disrupting DNA activity in the affected cells.
THz is being developed for medical imaging, wireless networks, automotive radar, and homeland security scanning – so we will be seeing more artificial sources for it in the future.
One more wave in our sea of artificial radiation.
A family member recently posted the excellent Tetra Vaal realistic robocop animation video by The Embassy Visual Effects Inc. Here are some links to warfare robotics that are in use or under development now:
The Foster-Miller SWARDS robots are deployed in Iraq:
Here’s a little video of the SWORDS/TALON from YouTube:
Foster-Miller TALON video
These things can be loaded up with a variety of weapons – Metal Storm seems like an obvious choice. Â Here\’s the Discovery Channel video of Metal Storm.
And of course there are lots of other bots in development – like the Crusher that can be run remotely – or set loose autonomously: YouTube Crusher demo video.
… and Big Dog…
… and flying spy-bots… if I saw one of these things shadowing me I think I’d have to go into skeet-shooting mode.
Dr. Strangelove Lives? According to a couple of informants (more are definitely needed) – the Soviets actually did build a doomsday device and then keep it secret. And it is still operational. According to the Wired article linked above, it would take more than one nuke strike in Russia to set it off….
… so I’m sure everything will be fine. What could possibly go wrong?
Cancer treatment goes nano: Â Researchers have come up with some nanotech form of perfluorocarbon laced with bee venom gets injected into your blood and selectively binds to cancer areas. The “bees” home in on a unique protein expressed around tumors, attach to the cells, and inject them with deadly melittin (bee venom). Mouse trials were good. Human trials soon.
It’s official: we are Stardust. We’ve known for some time that the atoms we are made of were forged in the interior of stars … and now NASA has found amino acid in comet tails – building blocks of life from stardust…
Here’s the NASA posting.
I love my weekly fix of Harry Shearer’s “Le Show”… the local Community College radio station used to carry it, but dropped it for some reason… so I catch it on the net every Tuesday. There’s amusement, music, and often political or environmental revelations. This week there was a reference to news that I somehow missed back in January (2009) about Mercury in high fructose corn syrup. The study released by the Environmental Health Journal starts out by revealing that:
Mercury cell chlor-alkali products are used to produce thousands of other products including food ingredients such as citric acid, sodium benzoate, and high fructose corn syrup…
which is a little disconcerting since all these things are contained in so many grocery store items! There are eight of these mercury-based production plants in the U.S. The chemical plants are required to report “lost” mercury to the EPA and:
In 2003 the EPA reported in the Federal Register that on average approximately seven tons of mercury were missing from each plant in the year 2000
So where’s the mercury?
Further testing showed that about 1/3 of grocery store items containing high fructose corn syrup tested positive for mercury.
Sweet.
Here’s links to Fox News, Washington Post, Web MD, and US News and World Report.
What could possibly go wrong [twitch twitch spasm]?
Of course there are other sources of mercury – broken or improperly disposed florescent lights, industrial discharge into air and water, accumulation in fish and shellfish, even forest fires…
Here’s an overview of mercury in our lives…
Department of Homeland Security plans to build a new (replacement) Biosecurity Level 3 & 4 lab in Kansas: read Tornado Alley. Sweet. Why? Because the Kansas senators and governor buddied up to the DHS – and one of them sits on the committee that controls DHS funding.
So we are moving our infectious disease research center from an isolated island North of Long Island to the center of the nation. What could possibly go wrong???
Toto – that new strain of Ebola isn’t just in Kansas anymore!
First buoy is scheduled to deploy 2-1/2 miles off the southern Oregon coast in 2010… ramping up to 10 buoys – - – enough to reduce coal emissions by 2,000 tons of CO2 a year. OPT – a U.K. company that has built several wave parks – has the contract – along with local fabrication businesses. Â Mikey likes it.
An electrical Co-Op consortium (a Co-Op Co-Op?) named PNGC Power is overseeing the project.
Here’s a newspaper note.
And an electric Co-Op write up.
First off, our galaxy (the Milky Way) is a spiral armed galaxy similar to Andromeda – basically like a pinwheel.
Hubble photo - Andromeda
The “galactic plane” is the center plane of this pinwheel – some stars are above it, some below – but most stars are right in the plane. Well sort of. The spiral arms of the Milky Way rotate around the center of the galaxy like the vanes on a pinwheel – and so does our Sun. Only our Sun is traveling a little faster than the main portion of dust and stars in the arms. And our sun is bobbing up and down as it rotates around the galactic core – so sometimes it is above the galactic plane, sometimes below – - – right now it has gone through the galactic plane and is headed to the “North” side of the galaxy – but gravity will eventually pull it back – bobbing up and down like a rider on a merry-go-round. Each full cycle takes our solar system sixty-some million years to complete.
Got all that?
OK, now picture that the galaxy as a whole is also flying through space, but it is not flying edge-on, it is flying flat-face-forward into the intergalactic medium. North side first. This creates a bow shock wave on the North side of the galaxy:
Galactic Bow Shock Wave
That shock wave crates a spray of high-energy particles. So when our solar system bobs up to the North side of the galaxy, we get a little cooked. If you want to see the full-sized graphics and explanation – check out this article. Anyway – there’s a loose but suggestive relationship between bobbing to the North side and extinctions in the fossil record:
North Side Extinctions
Here’s another article on this possible correlation.
But there’s another curios galactic circumstance. Remember that part about our Sun rotating a little faster than the spiral arms of the Milky Way? Well it turns out that there is a correlation between when our solar system moves through a spiral arm and several of the extinction events.
Spiral Arm Extinctions
It gets mighty interesting in this old universe. But either way, the next event won’t peak any time soon.
The folks at Riversimple are coming at automobile design from a fresh angle. Several fresh angles actually. They’ve spent years designing and prototyping a pod style car that runs on hydrogen. Today hydrogen is typically made from natural gas – giving the car about ¼ of the carbon footprint of gasoline vehicles. But hydrogen can be made from sunlight and water (with a little help from photovoltaics) – which would make the carbon footprint of running the car, well, nil.
They also are not going to sell the car. Riversimple feels that selling cars, accessories, etc. sets up a situation that rewards obsolescence and waste. So they will lease their cars instead – which sets up a situation that rewards durability and efficiency.
And they are publishing the engineering Wiki-style to let engineers anywhere improve the design. They acknowledge that in making their design public they are encouraging competition to their own business – but hey, that’s healthy.
BMW has a hydrogen car, and I gather that a small string of hydrogen filling stations exists in California.
To my mind the real hydrogen (or electric car) breakthrough will be when photovoltaics come of age and you can trickle-charge your battery or hydrogen cells from sunlight.
But maybe I’m just a dreamer. I’d love to have a flying car too. Like one of these (if Moller EVER gets it in production) – but the price tag is too high:
The Terrafugia “roadable aircraft” will probably beat Moller to market – but I love the Moller VTOL ability. Just put a landing pad in the meadow and transportation will never be the same.
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