23 Sep 2016

Sci/Why: What's the Source?

Sci/Why: What's the Source?

What's the Source?




by Helen Mason
What is a lemato? Is this one?
 Does use of the same or similar wording in more than one article about the same topic set your alarm bells ringing?

In 2013, I was working on Agricultural Inventions: At the Top of the Field, a science book for kids in grades 5 to 8. In my search for genetically modified foods I kept coming across references to the lemato. According to the sources, this is a cross between a lemon and a tomato.

One site talked about mixing a tomato and a lemon seed. Another discussed how the cross was made solely to test whether researchers could find a way to make a tomato smell like a lemon. An article for students talked about the health benefits of crossing an antioxidant such as a tomato with a fragrant citrus fruit such as the lemon.

Or this?
Almost all appeared with a picture similar to the one at the right from a Portuguese student web site. Some had one similar to the photo at the top. Another showed a fruit that was tomato at the bottom and lemon at the top, including the skin. The author claimed not to have used photo-shop. Really?

Several sites criticized the use of GM. Few referred to the original researchers. It was them I wanted to find—and fortunately I did.

Since the lemato was developed at Israel's Newe Ya'ar Research Centre and I don't read Hebrew, I researched SciTech news sites. The lemato is a tomato that includes a gene from a variety of lemon basil. Basil, that's the annual herb that's a member of the mint family and not a citrus fruit.

Would a pic like this draw you into an article about lematos?
So what's the message for online researchers? First, don't believe everything you hear or see on the Internet. Second, remember that many sites are like movie tabloids. Correct information might be present—but you have to get beyond the hype.

And no, I still haven't seen a lemato. But I suspect that it looks like a regular tomato. Researchers suggest that it has a different smell, however.

 Helen Mason's most recent books include What is Digital Entrepreneurship, Be an Active Citizen in Your Community, and Be an Active Citizen at Your School, all Crabtree, 2016.

16 Sep 2016

Cupping Bruises May Confuse Forensic Scientists

Via Amy Selleck on Wikimedia Commons
If you had any exposure to the Rio Olympics at all, you probably noticed the giant hickeys several athletes - most notably Michael Phelps - were flaunting all over their events. Attacks by enormous octopodi? Nope. Cupping bruises.
If you've had any exposure to the internet since the Olympics, you've probably learned that cupping is a procedure from traditional Chinese medicine that involves creating a vacuum inside a glass or plastic cup, then applying the cup to the skin. Skin and tissue get sucked up into the cup. This increases circulation to the site, which could speed healing. So, in theory, could the suction itself. As my massage therapist explained it, massage involves "unsticking" tissues by pressing down, whereas cupping unsticks them by pulling up.
Western science has yet to find evidence that cupping actually works, which is not entirely surprising, given the nature of the treatment. As my massage guy also pointed out, it's pretty hard to do a double blind study on a treatment that creates a distinct physical sensation and a giant hickey. But that's OK, because this post is not about whether cupping works.
It's about the giant hickeys, which are formed when blood rushes into the skin below the cup, causing the tiny blood vessels to burst.
Here's a fact about cupping marks those Olympic stories didn't mention - they look an awful lot like bruises left by particular types of blunt force trauma. Specifically, the kind found in cases of child, domestic, and elder abuse. Depending on circumstances, cupping marks can also look like lividity - the pooling of the blood after death.
This, as you can imagine, is a problem, not for athletes, but forensic scientists. If pathologists don't know about cupping and the kinds of marks it leaves, they could interpret those marks as signs of foul play, confusing a criminal investigation.
Something like that happened in Turkey in 2015. A 40-year-old man died during surgery to repair shotgun injuries. Most people would assume the shotgun was to blame for his death, but the attending doctor saw round bruises and ordered an autopsy for further investigation. It wasn't until police interviewed family members that the bruises were identified as cupping marks from the victim's regular treatments, rather than signs of violence that contributed to his death.
Which just goes to show that being a forensic scientist is a really, really hard job, because you have to know pretty much everything about everything.
Did you watch the Olympics? Have fun playing "connect the dots" with the athlete's cupping marks? Did their endorsement make you want to try it?
Want to know more about being a forensic scientist? Check out my latest book for young readers, Discover Forensic Science!

11 Sep 2016

Clam Gardens Revisited

Ever dig clams on a beach? If you had to race razor clams as they ducked away in sand, it's easy to think "There HAS to be a better way!" But if you scraped for butter clams only a few inches down in the stony muck of a clam garden, you'd know that clam gardens ARE a better way.


Clam gardens are beaches modified by First Nations people on shorelines along the West Coast, to increase and improve the habitat for clams that are particularly tasty and easy to gather. Back in 2011, I was lucky to be a volunteer helping biologist Amy Grosbeck in her study of clam gardens, and wrote for Sci/Why about the experience. Click here to read that post and see some excellent photos by that scientist. Amy Grosbeck and her colleagues went on to write a journal article about their study (and it's really interesting to read).


Amy called me up this summer to offer another chance to volunteer to help her with another study. Hurray! My spouse Bernie and I were glad to join her on Quadra Island, to take some samples and tidy the clam gardens she was studying this summer. We stayed a few nights in a bunkhouse maintained by the Tula Foundation for the Hakai Institute, which supports intertidal biology research by Amy and many of her colleagues.

At 4am, you better have a headlamp!

Studying intertidal biology means getting up before dawn, and getting to our launch point at Granite Bay before low tide.We left the bunkhouse at four o'clock in the morning, after a quick breakfast. Amy and Bernie paddled a canoe loaded with pails of scientific gear, while I paddled alongside in my inflatable kayak (The Lagoon is a very practical boat, sent to me by Advanced Elements, and a big improvement on the already excellent version I paddled on my 2011 trip with Amy.)

When the sun came up, we could see clouds, fog, and rain all around Kanish Bay.

Paddling in a light drizzle of rain at 4:30am was made more interesting by the swirls of phosphorescence in the water. Every time our boats moved, the water would sparkle with tiny specks of light made by plankton. If there had been a moon or lots of electric lights, the dim sparkles wouldn't show. On that dark early morning, the swirls of light were amazing. Each stroke of a canoe paddle left big swooshes of light, and my kayak was skimming on waves of sparkles. Then we paddled over a bed of kelp, which lit up with the movements of fish and shrimp. Too bad the sparkles are too dim to photograph well with ordinary cameras. The light show made getting up so early seem worthwhile.


It seemed even more worthwhile when we got to the clam garden and learned how much work Amy had been doing there. Quickly she showed Bernie how to take samples of the beach material -- stony sand mixed with broken clam shells and muck -- while she and I gathered up sample bags she had fastened to metal rods driven into the beach at intervals.


Somehow we got all the samples taken, all the bags gathered, and all the rods retrieved before the rising tide covered her sample sites. The beach was tidied up at the end of Amy's study season, and our work was done.


And then we did it all again the next day on new beaches. Science! Paddling at 4:30 am in the rain for science! Soaked to the skin all day for science! It was worth it, and I'll go again when Amy calls me to come do for a few days what she does over and over many times a year.. To be an intertidal ecologist for a few days, gathering data for scientific studies, is a wonderful opportunity.

2 Sep 2016

I wrote an illustrated book - about invisible stuff!

By Claire Eamer
Cover art by Marie-Eve Tremblay.
Published by Kids Can Press.

My latest kids' science book - Inside Your Insides: A Guide to the Microbes That Call You Home - hits the bookstore shelves on Tuesday, September 6. And I'm thrilled.

I know, I know - I've been here before. After all, this is my seventh kids' book. But the launch of a new book never loses its charm. There's a long and sometimes painful road from the first exciting bit of research to the finished object - all shiny and glossy and colourful, and just waiting to delight fresh eyes.

This time there's an extra level of delight, at least for me. The topic of the book is the invisible menagerie of tiny critters that make up the human microbiome. The key word here is "invisible." And a key aspect of kids' books is illustration. So, how do you illustrate the invisible?

One solution might have been photographs. Microbes aren't really invisible - just really, really small. You can see some of them through a light microscope and more through an electron microscope, but some are barely visible even with the best equipment. And they....well....they look a bit boring. (Sorry, microbiologists! I know you love them all.)

EHEC bacteria, O104:H4 outbreak strain. Scanning electron microscopy. Bar: 1 ┬ÁmSource: Gudrun Holland, Michael Laue/RKI
The better solution is an artist - in this case, the marvellous Quebec artist and illustrator Marie-Eve Tremblay.

I should explain that the publisher, Kids Can Press, came up with this solution. I just sent them words and then sat back and crossed my fingers, hoping they'd find a way to bring the book to visual life.

And they certainly did. Marie-Eve's microbes have character, humour, colour, emotion. Not bad for mostly-single-cell organisms. They might not be exactly what a microbiologist sees, but they get some fairly difficult information across in a way that will engage the kids reading the book.

And, who knows? Some of those kids might be the next generation of microbiologists. I hope so!

Thanks, Kids Can Press and Marie-Eve Tremblay, for making my words come to colourful and entertaining life.

If you want to know what reviewers think of the book, check out the reviews in Quill & Quire, School Library Journal, and Kirkus Reviews.

And for some cool information about researching the human microbiome - and keeping your research up to date - see Jan Thornhill's Sci/Why post from March of this year.

29 Aug 2016

Astronomy Before Bedtime




Photo by NASA Goddard Space Flight Center showing a C3-class solar flare that erupted from sunspot 1105 on Sept. 8, 2010. Used under CCBY-2.0 license.

by Adrienne Montgomerie

“I really like astronomy, but I can’t stay up that late,” I said to the astronomer I met the other day.

“Lucky for me,” he said. “I do my astronomy during the daytime. Only optical astronomy really requires a night sky — and that's only for ground-based telescopes!” Then Drew the astronomy PhD student at Queen’s University went on to tell me about radio telescopy and telescopes out in space.

Light is part of the EM spectrum, and so are X-rays and radio waves. Astronomers can look for the X-rays and radio waves given off by stars and planets to learn what they are made of and how they behave. That method works even when daylight obscures the objects.

A couple years earlier, I met the team from RMC (the Royal Military College) who study stars in daylight. Their specialty is the Sun!
  
Beginning Daylight Astronomy

The easiest targets are our own Sun and Moon. You can watch the Moon with your bare eyes and observe how its shape changes from crescent to fully round and back to crescent. With a pair of binoculars, you can zoom in on the craters and other features that show the Moon’s history of being hit by space rocks. A telescope lets you see even more detail.

You can observe the how the Sun’s path across the sky changes with the seasons. But you can learn more about the Sun itself.

It can damage your eyes to look straight at the Sun, but there are filters that fit over a telescope to make observing the Sun safe. One really fun time to observe the Sun is during a solar eclipse, but even with most of the light blocked by the Moon, it’s still unsafe to look directly at the Sun. One easy trick is to have a telescope project the image of the Sun onto a piece of paper. With your back to the Sun, put paper below the telescope’s eye piece. You can then look at the Sun on the paper.
  
Events in the Daytime Sky

On August 21, 2017 there will be a total solar eclipse visible from coast to coast in the USA. It is only visible where the shadow meets Earth, so not everyone will see it.

An eclipse is a great time to get a better look at the Sun’s corona. Because the Moon blocks most of the Sun during an eclipse, it makes the remaining part easier to see. The outer edge (corona) is where you can see great tongues of fire exploding from the star (like in this picture). Those are called flares and they can be as powerful as 1 billion megatons of TNT! Solar flares are what send electromagnetic waves outward from the Sun. When they reach Earth, they cause Northern Lights (and Southern Lights, too). When there’s a big solar flare, you can watch for signs of it affecting Earth a few days later. It’s not just pretty lights that solar flares cause. Sometimes that radiation interferes with radio and power transmission here on Earth.

Lunar eclipses sometimes happen during the day, too. It’s not as dramatic as a nighttime eclipse, but you can see Earth’s shadow take a bite out of the Moon. You can see that without anything but your eyes.

To learn more about astronomy, check the Royal Astronomical Society of Canada (RASC) and Sky News magazine. 

Adrienne Montgomerie is a science and education editor who helps publishers and businesses develop training resources. She believes we can make even the most complex ideas and procedures easy for learners to take in, maybe even to master.