U Is For Uranium and Urgeiriça.

Urgeiriça is a Portuguese village known for having been the center of the country’s biggest uranium mining complex. The first mine opened in 1913, the last closed in 2001, radioactive management throughout was always very poor to nonexistent. The environmental and human health impacts were huge and are still being dealt with, there are still people living in contaminated homes, former workers and their families waiting for compensations for occupational diseases (needless to say, that’s mostly cancer). Environmental rehabilitation is being done, slowly. Here is shown a phytoremediation plant at the mine of Cunha Baixa, in which buoyant plant mats are being used to clear contaminated waters. In the second photo you can see a close up of those heavy-metal-loving plants, they take up the heavy metals (including uranium) from the water and accumulate them in the leaves, clearing the water.

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© Nightjar, all rights reserved.

Jack’s Walk

It’s a sunny, warm day here and Jack felt like stopping to take a rest. He really isn’t fond of warm weather and right now he’s still wearing most of his winter coat so he heats up quickly. I think with weather like this, though, the annual shed is about to begin. It’s a laborious undertaking for both of us with hair that comes out in handfuls and more handfuls. You can brush him until your arms ache and still more hair comes.  It’s a tsunami of hair and there is just no way to stay on top of it. Let the vacuuming begin…

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T Is For Tranquility and Taralhão.

Tranquility. Taralhão.

Taralhão is one of the many Portuguese common names given to two flycatcher species that visit us every year, from late August to November: the spotted flycatcher Muscicapa striata and the pied flycatcher Ficedula hypoleuca. In this photo, a pied flycatcher calmly sits on a tree collard at the end of the day, possibly contemplating all the flies it has eaten or if it is already time to leave the European continent for the year. Pied flycatchers breed in most of Northern and Eastern Europe and there are some breeding populations in Spain, but here they are only migratory, staying for only a few months before going to winter in Africa. They are one of my favourite birds, despite their winter plumage being a bit on the dull side. But they are so lively and funny that I can spend hours just watching them hunt insects.

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© Nightjar, all rights reserved.

No. That’s Just Wrong.

I was happily lost in The Public Domain Review the other day, and came across High Frequency Electric Currents in Medicine and Dentistry from 1910. I know there was great excitement over electricity, and there were phases of “miracle cures” where it was concerned, but in this case, it was the photos which got my attention, including one which just about had me screaming, and I’m not even a parent:

The text reads:

Plate XXII. – This beautiful picture (as exquisite as Manet’s “Boy with the Sword” which is one of the classics of the Painting Art), sets forth this boy bringing his pocket “Tesla” for the enjoyment of his beloved tonic. His sturdy strength at the age of three is a tribute to the efficacy of high frequency currents, for at the age of three days, when his treatment with them was begun, he was an illy-thriving and frail infant with but the feeblest hold on life. Look at him well, and think how many myriads of pallid children – of all ages – need the same remedy.

There is So. Much. Wrong. there, it just leaves me sputtering. Applying electrical currents to a three day old infant? All I can think is how very easily that could kill said infant. As for the photo being as exquisite as Boy with a Sword, let’s see:

L'Enfant à l'épée'' par Edouard Manet, 1861.

L’Enfant à l’épée’ par Edouard Manet, 1861.

Yeah, I don’t think there’s any honest comparison there at all. There are other questionable and frightening photos to be seen with the magical Tesla wand, but have a care, there’s some nudity, so NSFW.

S Is For Spirulina.

Spirulina.

A while back I was involved in preparing an activity for kids as part of a science outreach event, the goal was to show them some bacterial diversity and how different bacteria look, both macroscopically (and for that we tried our best at Petri Dish Art, I highly recommend you look that up) and microscopically. As I was scanning through a wet mount of Arthrospira platensis (spirulina), I found this delightful S-shaped filament (called a trichome) and couldn’t resist. The quality isn’t very good, this was taken by hand-holding my phone over the microscope’s eyepiece.

  1. platensis is a cyanobacterium, a photosynthetic organism that gets its energy and food from sunlight and carbon dioxide just like plants do. Unlike many cyanobacteria, A. platensis does not produce toxins and that’s why it can be used as a food supplement. Its cells typically associate into spiral-shaped filaments but what you see here is a fragment of a spiral that has taken a S-like shape. If you zoom in you can see the individual cells and at the bottom right of the picture there is a single cell. No staining was done, they are naturally green because of the chlorophyll.

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© Nightjar, all rights reserved.