Great Scientists: Gregor Mendel
He was a lonely monk.
EXCERPTS >|< Your Body During Adolescence (1955)
A video from Prelinger Archive.
A series of gifs excerpted from Your Body During Adolescence. Shows the seven glands that regulate human life and growth with emphasis on the pituitary and sex glands. Outlines changes that take place in the bodies of boys and girls.
Do you really know your body? From the age of 12-15, you’re basically just a rapidly expanding bag of glands (according to this video, anyway, which you can watch in full below):
Yes, it’s a funny look back in time. But sadly, 60 years later, this is still how many young people are introduced to sexual education, with sex only spoken about as a way to make babies, and adolescence only serving as a stepping stone to life as a responsible, working adult (who, of course, wants to get married and make babies). Adolescence is perhaps the most crucial period of a person’s life, in which you experiment and question and discover and change all sorts of things about your mind and body. Yes, in the end you become an adult, but instead of the mythical and somber suit/tie/apron/job/baby definition put forth in these antiquated videos, you should consider being an adult as becoming just a slightly older person who experiments and questions and discovers and changes all sorts of things about their mind and body.
For a look at how sex ed should be done, you really should be watching the Sexpalantions channel with Dr. Doe on YouTube!! Appropriately, here is her video “Sex is Not Black and White”:
One of my favorite GIFs of one of my favorite NASA visualizations to preview Monday’s It’s Okay To Be Smart and get you excited and all that jazz. Think you can guess what tomorrow’s vid is about?
Blue = sea salt
Green = organics
Red = dust
White = sulfates
Check out the full NASA video below, featuring simulated global “stuff in the air” over a two year period on Earth. Ain’t Earth beautiful? (Even if, as in this case, it’s a 3 million processor-hour computer animation)
Version 1 of ‘A Rough Guide to Spotting Bad Science’. Thanks for everyone’s suggestions earlier in the week, attempted to include as many of them as possible!
Download link here: http://wp.me/p4aPLT-ap
Approach the world with an open mind, but not so open that your brains fall out.
Here’s a list of tips on how to weigh good science from bad. Combine that with my video on “How to Read Science News" and you’ll be in pretty good shape and shall never be led astray:
Ahh, springtime in Austin, when oak trees get amorous, sinuses get drippy, and white cars turn yellow.
Seriously, oak (and cedar) trees might be the most inefficient reproducers in all of nature. Anything that needs to release it’s own weight in gametes just to survive is doing it wrong. Or should be named Ron Jeremy.
When I was a child, it was believed that animals became extinct because they were too specialized. My father used to tell us about the saber-tooth tiger’s teeth — how they got too big and the tiger couldn’t eat because he couldn’t take game anymore. And I remember my father saying, with my brother sitting there, ‘I wonder what it will be with the human beings that will be so overspecialized that they’ll kill themselves off?’
My father never found out that my brother was working on the bomb.
February on this blog is going to be Daily Paleo Art Month! Because doing dinosaurs all last July was so much fun I want to do this thing again.
Every weekday for the rest of the month I’ll be posting a new image of something strange, obscure, or just plain interesting from the fossil record — only this time we’re staying firmly outside of the Avemetatarsalia (pterosaurs and dinosaurs/birds) to give some less famous critters the spotlight.
A cartilaginous fish from off the southwest coast of the ancient supercontinent Gondwana (and later Pangaea), Helicoprion first appeared in the late Carboniferous (310 million years ago) and survived up until just past the massive Permian-Triassic extinction (250mya). Despite looking rather shark-like and possibly reaching sizes of around 6m (20ft) long, it was actually closer related to the chimaeras.
For a long time, the only parts of this animal known were bizarre buzzsaw-like spiral whorls of teeth, since cartilage skeletons very rarely fossilize. The ideas for just where in the body this structure was positioned were ridiculously varied.
The most recent reconstruction is based on CT scans of a well-preserved fossil with jaw and skull elements, which showed the whorl taking up the whole lower jaw. It also turns out Helicoprion had no upper teeth at all. It’s thought to have used this arrangement to shred and crush up squid and other soft-bodied marine prey, but there’s still very little known about how such a unique type of teeth evolved in the first place.
I think evolution must work like Ikea, because occasionally nature completely misread the directions and puts a piece on backwards.
I'm Joe Hanson, Ph.D. biologist and host/writer of PBS Digital Studios' It's Okay To Be Smart.
Check out my "Episode Extras" here. There's a lot of amazing science out there. Let's learn something together.
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