Astronomy's Fantastic Fiveby Joan Marie Galat

Astronomy's Fantastic Five

by Joan Marie Galat

Next time it's too cloudy to enjoy the night sky, explore these five fantastic astronomy sites:

• View from the International Space Station at this moment! 
  

• Choosing Binoculars

• Choosing a Telescope

• How to Become an Astronaut
  
• Space Weather.

You can find more astronomy resources, as well as information on the Dot to Dot in the Sky book series at www.joangalat.com under Astronomy and Books.

My Excellent Science Fangirl Adventure - Shared

By Claire Eamer

I'm in Boston, a city I've never visited before, and I probably won't see much of it during this visit. Why not? Why am I not out exploring the historic streets, world-famous museums, exotic shops? Sad to say, I am spending my time happily geeking out on science.

I'm at the annual meeting of the American Association for the Advancement of Science (AAAS, or #AAASmtg if you Tweet). Doesn't sound all that impressive, eh? But really it's hundreds of scientists presenting bite-sized bits of their work and discussing it on panels in front of thousands of fellow scientists, educators, journalists, enthusiasts -- and science geeks like me. More than four days of glorious science indulgence!

It's too much to tell you about here, but I thought I'd post a quick set of links so that you can all indulge in your own mini-geek. So -- here are a few of the places I go on the Internet when I feel like a quick dose of science fun.

For pure fun, great science in bite-sized pieces, and entertaining presenters, try Science in Seconds. It's a site started by four young women when they were grad students at the University of Alberta a few years ago. They have all moved on in their careers (and geography), but they are still producing great science goodies -- two new videos and three new blog entries every week. They're tireless!

You can also check out the contributors to Sci/Why. Just check the list on this site. Several of us blog elsewhere too. And we're cool. Honest!

For more Canadian science bloggers, go to the website of the Canadian Science Writers' Association, where you'll find an ever-growing list of blogs at the side of the page.

A few of the established, excellent, and highly entertaining pros of science blogging have just recently joined up at Phenomena: A Science Salon hosted by National Geographic. There you'll find Ed Yong, Carl Zimmer, Brian Switek (who blogs as Laelaps), and Virginia (whose blog is Only Human).

And does physics baffle you? Try the short videos at Minute Physics. You might still be baffled, but you'll be entertained. Actually, you'll probably be both entertained and un-baffled.

If you can't decide what kind of science you want to indulge in today, Scientific American has a science blog supermarket, with some amazingly fine bloggers, at http://blogs.scientificamerican.com/

Finally, I just discovered this site and I had to share it. Who better to share it with than you? It's the Smithsonian Institution's amazing set of pages on human evolution. To meet our distant cousins and remote ancestors and (almost) shake their hands, go here: http://humanorigins.si.edu/

And if you want to have even more fun -- most of these folk are on Facebook and Twitter too. Just go to their blogs to find the links.

Gotta run. More amazing science on the platter. Have fun!

Captain Underpants and the Quest For Science Literacy

by L E Carmichael

Last week, writer friend Ishta Mercurio posted this video about the connection between science and literacy.  As it's pretty much perfect, I'll let the video speak for itself.

Taking Science Fun to the iPad People

Last year I had the wonderful opportunity to write a script for a kids' "appisode" - a web-based story and game combo for iTunes and the iPad. It was exciting to be part of a team working in what was a new format for all involved. The challenge - to bring science ideas to a new audience in an exciting and interactive way.

The results, I'm thrilled to say, are now available for download at https://itunes.apple.com/us/app/dr.-greenies-mad-lab/id565671925?mt=8. I'd be thrilled if you would check it out and try some of the games. And laugh at some of the groaner jokes I wrote for it too!

Special feature!!! Here's a sneak peek at the "Achievements" page for the games. Notice howyou get special points for  being rude and for offering a  bean-powered fart boost...

Spider Art and Bioluminescent “Bombs”: Extreme Animal Mimicry

by Jan Thornhill

Exciting news for the world’s arachnophiles (spider lovers) broke late last year – a spider was discovered in the Peruvian Amazon that constructs a much larger fake spider in the center of its web. The as-yet-unnamed arachnid, likely belonging to the genus Cyclosa, creates its faux-spider masterpieces (some of which have eight legs!) out of leafy debris and dead insect parts. To further enhance the big-spider illusion, the real spider hides at the head of its creation and plucks strands of the web to make it vibrate.

The decoy spider's elaborate fake spider (Phil Torres)

So, does this spider make art? Nope, sorry – it’s not art. Creating a larger decoy of itself to frighten off potential predators is a form of self-protective mimicry that’s hardwired into the spider’s genes.

The most common form of mimicry is camouflage. Such visual mimicry can be as basic as a lion’s tawny coat blending in with the African savannah, or a gray-patterned moth disappearing when it lands on a similarly colored tree. More complex examples include caterpillars that pose as twigs, or leafy seadragons that are almost indistinguishable from seaweed, or spiders that, along with their webs, can be mistaken for bird droppings in both color and shape.

In Batesian mimicry, harmless species evolve to visually impersonate poisonous or distasteful species, which makes it much less likely that they, themselves, will be eaten. A master of this particular adaptation is the Indonesian mimic octopus.

The mimic octopus impersonates a flatfish, a scorpionfish, and a sea snake.

Octopuses are masters of disguise and can change color and pattern, and even texture, to match their surroundings. The mimic octopus’s self-defense strategy goes one step further – it’s a shape-shifter. This diminutive cephalopod has evolved an elaborate collection of behaviors that allow it to ape other marine animals. It stretches out its arms to imitate a scorpionfish flaring its poisonous spines, or hunkers down with only two legs extended in either direction to impersonate a venomous sea snake, or swims flattened out to mimic the shape of a flatfish. To date, this little octopus has been observed posing as fifteen other marine creatures! A fun twist to this amazing story is that scientists have recently witnessed a timid little black-marble jawfish, whose markings are strikingly similar to those of the mimic octopus, swimming perfectly disguised among the arms of one of these octopuses. A mimic mimics a mimic!

Australian chameleon gecko (Stewart MacDonald)

Decoy mimicry is yet another variation, in which animals have developed a means to either divert the attention of a predator or, conversely, to attract the attention of a potential meal.

One of the most radical practitioners of decoy mimicry is the gecko who, when threatened, is capable of discarding its own tail. The cast-off tails of some geckos flop around and writhe, offering a tantalizing alternative meal to predators while the geckos themselves escape. In Australia, the writhing, discarded tail of the chameleon gecko is made even more irresistible – it actually squeaks! Though self-amputation may sound like an extreme adaptation for survival, geckos are capable of growing replacement tails within a few months.

The adaptation of decoy mimicry isn’t confined to land animals. While studying life in the ocean’s depths aided by remote-controlled submarines, a group of scientists led by research zoologist Karen Osborn discovered seven new marine worms (annelids), some of which have developed a novel form of decoy mimicry – we just don’t know exactly what they’re mimicking.

Deep-sea marine worms release bioluminescent "bombs" (Karen Osborn)

These small bristly worms, the biggest no longer than a finger, come equipped with tiny balloons attached to their bodies near their heads. When one of these worms, which have been dubbed “green bombers,” is touched, it releases one or more of these bioluminescent “bombs” that give off intense green light for several seconds. It’s likely that a would-be predator, searching for a tasty morsel in the darkness, would be distracted by these mini floating lights while the worm is able to avoid being eaten by quickly swimming backwards out of harm’s way.

Update

August 21, 2018

I have to add this guy I came across in Chile. It's a fabulous example of automimicry – the kind where part of an animal's body looks like a more vulnerable part. 

Here's the first view I had of this insect:

"What a character!" I thought.  Kinda cute, and kinda homely at the same time, like an old shoe. 

Then I changed my camera angle... 

...and saw that what I'd thought was a face was actually the insect's rear end. 

How fabulous – it's abdomen was pretty much a replica of its head, complete with bulging red eyeballs! (If anyone knows anything about this beetle(?), I'd love to hear from you!!)

Here’s a link that has a video showing forward and backward movement of one of the newly discovered marine worms (genus Swima): http://news.sciencemag.org/sciencenow/2009/08/20-02.html

Here’s another that shows the mimic octopus in action: http://www.youtube.com/watch?v=H8oQBYw6xxc

More info about the decoy spider: http://blog.perunature.com/2012/12/new-species-of-decoy-spider-likely.html

And a delightful recording of the moment the decoy spider was discovered!: http://www.youtube.com/watch?v=RrWnZ7VySac

What Simon Cowell has taught me about writing

Okay, I confess (but don't tell anyone). I really like reality TV talent shows, particularly Britain's Got Talent and the X Factor. American Idol also has its moments. Over the last couple of years, I've been struck with the notion that there are equivalents between me and my writing and those would-be singers. Plugging away at my craft, facing the judgment of literary journals, agents, granting bodies and publishers, and dealing with the mostly rejections and occasion encouragement or minor success, I think I've learned from the successes and failures of the likes of Susan Boyle and Chris Maloney and the countless others whose names I have forgotten or never knew. Amid all the strutting and crooning and crying, I've gleaned a think or two. Here's my attempt at summarizing what Simon Cowell and his friends have taught me:

1 There are many reasons that people with talent don’t make it. These reasons might include:

·         Someone judging had a fight with their girlfriend/boyfriend/hairdresser

·         Someone judging is drunk or under the influence of narcotics

·         Someone, like a producer, gave bad advice

·         The person with talent chose the wrong song/genre/medium, etc.

·         The person with talent has the personality of a wet noodle.

2  There are many differences in opinion; don’t trust what any one person says, but if lots of people say the same thing, they are more likely to be right.

3  Just because you think you have talent doesn’t mean you actually do. We can delude ourselves.

4 Just because you don’t think you have much talent, doesn’t mean you don’t. We can underestimate ourselves.

5 Sometimes you should listen to no, and sometimes you shouldn’t. (See 2,3, and 4 above.)

6 Young people are capable of a great deal, not just in terms of raw talent, but drive, dedication and maturity.

7  Humans like surprises, in art as well as in people.

8  Everyone likes a good rags to riches story, but especially the rags part.

9 People considered strange in everyday life are often fascinating and attractive if put on a stage. Big personalities need distance to be most appreciated. NOTE: there is such a thing as being too weird (see below).

 10.   Talent in restraint with the occasional burst of brilliance is ideal. A wild streak is great, as long as it is just a streak and not a full immersion.

  11.   Humility is appealing. So is authenticity.

 12.   Hard work and determination are essential, but not enough on their own.

  

 13. There is a big difference between good and great.

The Science of Snow

I live in Regina, Saskatchewan. We joke that weather is more than small-talk here. Too often, it's what everyone is talking about.

This winter, it's a topic with a vengeance. According to Environment Canada, we've been setting snow records this year:

- a new daily record of 24 cm November 9
- more snow in the first three weeks of November than we had all last winter
- the snowiest November since the 1880s

In December, the snow continued. And with another 20+ cm dump yesterday, January just seems like more of the same.

As you can probably tell, I'm not a fan of snow. But if you can't get away from it, you might as well dig into it. So I'm digging out a copy of Snowflake Bentley by Jacqueline Briggs Martin, searching on the Internet, and turning to science to help me beat the winter blahs.

Snowflake Bentley tells the story of Vermont farmer Wilson Bentley, who studied snow and took pictures of snow crystals. In the book, someone tells Bentley that "snow in Vermont is as common as dust." I laughed when I read those lines. Did you know that snowflakes start out as tiny crystals no larger than a speck of dirt or dust, and join with other crystals when they fall? Most snowflakes are six-sided, and the size of one flake depends on the number of crystals forming it. When I was a child, I remember catching snowflakes on a mitten. An individual snowflake can be quite beautiful.

That's hard to believe when you look at the pile of snow in my front yard these days. Thank goodness for neighbours with snowploughs! Lately I haven't been looking at the individual snowflakes, like Bentley did, because there's just been too much of it. Some of it is packed hard; some is powdery; some has already melted and frozen often enough to form ice underneath.

The National Snow and Ice Data Centre (NSIDC) has collected a whole database of types of snow. The NSIDC site talks about blizzards, flurries, and snowbursts like the ones we've experienced this winter. We're too familiar with blowing snow and drifting snow. That's all we seem to see on the roads lately. The site lists some unusual types too, like "névé" (refrozen and compacted) and "graupel" (rounded snowflakes or snow pellets).

My favorite is hoarfrost. We've certainly had what feels like record amounts of hoarfrost on the trees this winter, but I haven't taken the time to enjoy the beauty of it. I think I'll go out and take some more pictures, as soon as it warms up.

Meanwhile, I thought I'd share some of the snow sites I found:

National Snow and Ice Data Centre

http://nsidc.org/cryosphere/snow/science/index.html

Science of snow: FamilyEducation.com

Snow Day by L L Melton

http://fun.familyeducation.com/childrens-science-activities/winter/35037.html

Study snow science: University of Montana

http://www.montana.edu/wwwes/programs/snow.htm

Please leave a comment and share interesting facts about snow or snow science with us.

By Marie Powell