Inflating a set of cat lungs
Lungs are by most accounts mundane. Everybody has them, few give it much thought. But sequestered within darkness of the chest cavity, enveloping the fluttering heart, there’s an incredible wonder to this oddly inflatable organ.
Dissection is a destructive process. Rudely excised from membranous mooring and nourishing vessels, the deflated lungs appear little more than bloodied meat; amorphous and exposed…….until a breath of air unfurls its secret glory.
Here, a set of cat lungs is inflated with a straw. Comprised of hundreds of millions of microscopic air sacks called alveoli, mammalian lungs harbor air capacity that is difficult to believe unless seen. The color of the entire organ lightens into a soft pink, as each microscopic sac fills with air.
A debt of gratitude is owed to cyborgraptor for her assistance in creating these gifs, as well as the students that helped me film this demo.
Kids, don’t try this at home, OK?
Glass diagnostic tools use honey bees to sniff out cancer
Portuguese designer Susana Soares has created a series of glass diagnostic tools which use trained honey bees to detect if a patient has cancer. The “Bees” project draws inspiration from research indicating that “sniffer bees” can be trained to detect specific odors such as explosives, or in Soares’ case, cancer. We’ve previously seen a similar idea where researchers used sniffer dogs to detect lung cancer and help develop a cancer-detecting electronic nose. And although bees can only be trained to detect a single odor, research by Inscentinel suggests that their abilities are just as good, if not better than their canine competitors. “Bees have an acute sense of smell and can be employed as a flexible and rapid biosensor for biochemical molecular odor recognition,” says Soares. “Bees can be easily trained to target a wide range of natural and man-made chemical odors including the biomarkers associated with certain diseases.” The bee training can take as little as ten minutes to complete, involving a simple process where the bees are taught to identify a specific odor by being rewarded with a water and sugar solution. The bees then associate that specific scent with food and will thus always seek it out in future experiments. (via Glass diagnostic tools use honey bees to sniff out cancer)
Are Alzheimer’s and diabetes the same disease?
HAVING type 2 diabetes may mean you are already on the path to Alzheimer’s. This startling claim comes from a study linking the two diseases more intimately than ever before. There is some good news: the same research also offers a way to reverse memory problems associated with diabetes – albeit in rats – which may hint at a new treatment for Alzheimer’s.
Full Story: New Scientist
How do we know what the Sun is made of?
The Sun fuses hydrogen into helium. But it’s too dangerous to simply take a sample to look at, so just how do we know what it’s made of? David Judge of the Live Science Team uses a trick of the light to show you how.
This video was presented by: David Judge
Produced and edited by: Ross Exton
How to find Perseus | Night Sky Guide:http://youtu.be/fsaGVIUSqGo
Why are veins blue? http://youtu.be/lk0HMqwreIo
Follow what the Live Science Team gets up to on a daily basis:http://twitter.com/atbristol_LST
At-Bristol is an educational charity and one of the UK’s leading science and discovery centres, with the aim of making science accessible to all. Exploration and education go hand in hand to create an unforgettable, fun day out with hundreds of hands-on exhibits, explosive live science shows and a Planetarium; At-Bristol is one of the UK’s biggest and most exciting interactive science centres.
Our YouTube channel gives you an exciting behind-the-scenes look at the people, places, exhibits, and experiments that bring science to life!
Find out more about At-Bristol: http://at-bristol.org.uk
Music: Provided courtesy of YouTube Audiolibrary
I really struggle to see the point of this research:Researchers at Science Gallery in Dublin collected bacteria from the noses, armpits, belly buttons and toes of different personalities and used it to produce off-white cheeses that smell and taste of the body odour of the donor. And the answer to would you eat cheese made out of human bacteria: HELL, NO!
Making a TED-Ed Lesson: Visualizing complex ideas
How can animation convey complex, intangible concepts? A visual metaphor, or an idea represented through imagery, can take an idea as massive as Big Data and tie it to the familiar depiction of a growing tree. TED-Ed animators explain how to make an abstract idea come alive visually.
View full lesson: http://ed.ted.com/lessons/making-a-ted-ed-lesson-visualizing-complex-ideas
View original lesson: http://ed.ted.com/lessons/exploration-on-the-big-data-frontier-tim-smith
via TED Education.