From the Cornell Lab of Ornithology.

The documentary To Brooklyn and Back tells the little-known stories of the artisans who played an important role in developing the infrastructure of the world’s most famous skyline. Hundreds of Mohawks left the reservations beginning in the early 1900s looking for work in the growing metropolis; taking a leap in the dark, some came with their families, establishing neighborhoods that still bear their name. Kahnawake Mohawk filmmaker Reaghan Tarbell traces her own family history in one of these communities.

PBS Documentary “To Brooklyn and Back: A Mohawk Journey”

Indian Country Today: Documentary Traces Brooklyn’s Mohawk Ironworkers

Image: Katja Esson – Skydancer

Skydancer: A Film by Katja Esson

Beginning with the St. Lawrence Bridge near the Canada border, built in the 1880s, Mohawk emigres first established a reputation in construction. As more Kahnawake crews joined the burgeoning steelworking industry, employers were impressed with their determined work ethic and remarkable coordination and balance – and they quickly became renowned as some of the country’s finest metal builders. The Empire State Building, the Chrysler Building, the World Trade Centers, and even the San Francisco State Bridge are all on the impressive list of projects to which they have contributed substantial effort.

The Straight Dope: Why do so many Native Americans work on skyscrapers”

Today, metalworking and construction are almost a family business among Mohawks – they work all over the nation wherever skyscrapers and steel frames go up; many still live in the New York boroughs where their ancestors first “boomed out.”

David Noble: The Mohawk Ironworker Series

From Language Among the Skywalkers by Mushkeg Media

One of my favorite horse portraits. From Wallcoo.net

BBC News: Rare lenticular clouds over West Yorkshire (Photo Gallery)

Lenticular clouds form when a moist air mass moves downwind of a mountain range where it reaches the dew point, causing quick condensation. This is why they are so often seen capping a mountain peak. Their odd shape and apparently low altitude account for their common identification as space ships.

This page on WeatherVortex.com has a very good picture gallery of some amazing lenticular effects from all over the world.

(Google Images)

From the Cornell Ornithology Lab’s photo contest – a beautiful shot of a female Northern Flicker, taken by Gary Mueller.

A Blink in Time

The earliest recorded studies of snowflakes date back to China in the first century BCE. Later, rudimentary sketches of crystal structures first appeared around the time that early microscopes made close observation possible for European scientists. But it was the camera that really gave the humble snowflake its well-deserved place in the spotlight. One of the pioneers of this field was Wilson “Snowflake” Bentley (1865-1931) who made thousands of unique photomicrographs on black velvet (his photos were widely used by the scientific community and today are in the public domain). An 1885 photograph by Bentley is believed to be the first time a snowflake was captured by camera. So passionate was Bentley in the pursuit of the snowflake’s elusive beauty, the elderly photographer died of pneumonia after tramping through a blizzard for six hours with his camera.

Blueprint of a snowflake

A snowflake is essentially a molecule of water vapor crystallized by freezing temperatures. The more molecules accreted together, the more complex the form. Snowflakes most often develop six-sided figures because the layout of a water molecule and its ratio of oxygen and hydrogen atoms affects the way the molecules bond with each other in a crystal lattice. Snowflakes form in a cloud when the H20 is supercooled (around 14 F) and water condenses into droplets. The remaining vapor molecules cling to the water droplets and to each other as they begin to crystallize. In essence it’s more accurate to say that snowflakes are pieces of cloud, rather than mere frozen raindrops – which of course would be sleet.

This diagram illustrates how temperature and moisture affect the formation of snow (courtesy of Caltech’s Snowflake Study page):

Sorting infinity

As you might imagine, snowflakes come in so many forms that classifying them is no easy task. Many come in unfamiliar shapes with no resemblance to the famous “dendrite” types with their intricate fractal branches.

There are a number of basic snowflake forms: simple polygons; needles and rods; capped columns that look like spools of thread; clustered bullet-shaped snowflakes; and lumpy, irregular flakes of frozen water droplets. Some flakes form in a three-dimensional shape like a Christmas tree star.

Everyone knows the saying that “No two snowflakes are alike” – just like human fingerprints. But snowflake experts say that this very well may be a myth. It’s not as though there is a world database of “flake prints” to prove it; after all, if there were lots of identical crystal patterns hanging around out there, could we really expect to know about it?

Since nature favors diversity – and since there is a nearly infinite combination of variables affecting temperature, humidity, and other atmospheric conditions – it’s more likely that any two snowflakes will share only a passing similarity. There are more than enough crystal patterns to go around!

Psychological snow?

Finally, there is some research done by Mr. Masaru Emoto, who claims that snowflake formation is determined not only by temperature and air movement, but by mood. He has theorized that water responds to music, speech, and even human emotion, to create crystals that are correspondingly more or less aesthetically pleasing. Most serious academics ridicule this hypothesis, since the studies are based chiefly on the subjective taste of the researcher, perhaps blurring the line between control and variable – and because the results cannot be successfully reproduced in experiments.

If Mr. Emoto’s research has proved one thing, it seems to be that humans are at least as open to the power of suggestion as snowflakes are. Maybe it’s just pleasing to think that snowflakes could be as much a marvel to themselves are they are to us.

The next time you have the chance to see a cascade of the fluffy white stuff, I can be pretty sure you won’t be giving much thought to molecular geometry. You could always put on some of your favorite music and enjoy the show – maybe you won’t end up with happier snowflakes, but a moment to savor some of nature’s simple wonders is always a good call.

Snowflake photos from Wilson Bentley’s Official Site (Public Domain)

SnowCrystals.com – the definitive site for snowflake studies (Caltech’s project page)

Newscientist.com: Snowflakes as you’ve never seen them before with photography by Kenneth Libbrecht of Caltech

Snowflake “Bentley” Official Site

Wikipedia: Snowflake

EarthSky.org: How to take photos of snowflakes

Web Design Depot – a collection of more modern (but equally beautiful) snowflake macro shots

Ice sculptures in Banff National Park, Alberta – Photo by Stacy Conaway

Of course there are some REAL winter junkies out there – and though you’re probably outnumbered by sun-loving snowbirds who migrate (at least in their dreams) to more southerly latitudes as the days get shorter, you know there’s little that can compare to the awesome sparkling splendor of a snowy landscape, urban or rural. Whether it’s the glitz and nostalgia of the holiday season, or the pristine cleanness of the crisp air and a soft blanket of snow, there’s a certain subtle magic that no other time of year can offer.

So here’s to lovers of winter; feast to your hearts’ content on snowy snapshots and festive photography from places in the world where folks know how to do winter up just right.

National Geographic: In Praise of Winter

Prestvannet Lake, Norway – Photo by Einar Nilsen
You’ve got to take winter seriously when it brings darkness much of the year, as it does in Norway. Be sure to see the gallery of Scandinavia photos.

An easy way to keep track of the photo’s source once you’ve saved a copy is to use the “Details” fields in photo properties. This will allow you to enter an author, date, and other pertinent information, so you will never be in doubt months down the line, wondering where you got that photo, left trying to track it down to find the author. I make a habit of copy + pasting the source URL in the photo’s “Description” when I save it, so as long as the original is still online I can visit the source for information.

One great thing about this is that the information will stick to the photo wherever it goes – whether it stays in “My Photos” folder, or whether I share it on my Blog. Just be sure to enter the info as soon as you download it – that way you won’t have to remember later.

These days there are lots of photo resources available in the public domain, and also with various Creative Commons licenses that are free to use with certain stipulations, such as author credits. If you decide to store these pieces for later reference, it’s a good idea to sort them – e.g., keep a “Public Domain” folder, a separate “Creative Commons” folder, and one for protected pieces you have permission to use.

Please remember to respect the rights of other artists in using their works, whether online or otherwise. Attribute photographic works wherever possible to help ensure continuity of information.

See more info on public domain works and intellectual property rights in my post series Artists and Copyright Law.

Brown bear cub in snow, from Gary Lackie’s photostream on Flickr. Doesn’t look like the Alaskan cold bothers this little fellow a bit, does it?

Yes, another swan. Thanks to Alex Saberi on NatGeo’s Visions of Earth.

I’ve just uploaded a new set of photos to my Flickr photostream. I’ve been remiss in posting them; as a matter of fact I still have a few sets from this summer that I haven’t added yet.

If fall is your favorite season (as it is mine) then I hope you will enjoy browsing through them as much as I enjoyed taking them. As always, if you see any of them that you like, feel free to download/use them online or in your next project, no permission required – just pass along the favor.

Visit my photostream:

Photo courtesy of SpaceWeather.com reader gallery.

With any luck, we southerners will have another chance to see the phenomenon again tonight, as solar storm conditions persist. But at the given rate of solar activity, it’s likely that such “special effects” won’t be such a stranger to us in the future.

Discovery News: Epic Aurora Caught Across Country

Causes of Color Web Exhibit – The Aurora

National Geographic – Gallery

It’s not just for folks in the UK. The BBC’s Nature & Wildlife department has a big website comparable to National Geographic’s – it’s chock full with oodles of photos, videos, and fact files (and of course news) making it a nature lover’s paradise.

Some of the video content may not be available to visitors outside the UK, but there’s still enough great material to make it worth the visit. I could spend hours merely looking through the gorgeous photography. Professor Iain Stewart, whom I have blogged about before, is one of the main contributors for the science section. Browse by region, species, and topic – it’s superbly well-organized, and a particularly useful research tool for students.

Put this site in your Bookmarks!

More screenshots: