Getting from A to B

Rebrafish retinal cells, optic nerves, and glia are labeled. Retinal cells send projections through the optic nerve to their targets in the brain.Dr Kara Cerveny & Dr Steve Wilson Wellcome Images
Visual System of 4 day old zebrafish
Dr Kara Cerveny & Dr Steve Wilson Wellcome Images

How do individual cells find their way in the complex environment of a human body or a small worm? Some cells need to navigate from where they are born to where they are needed (like immune cells). Other cells need to send out a very long extension to make a contact with a very specific target (like a neuron sending an axon through layers and layers of other neurons to reach its connection in a circuit). I used to study a very specific example (one motor neuron connecting to one specific muscle) of this type of navigation in the fruit fly. Continue reading “Getting from A to B”

Camouflage is No Protection in Fiona Hall’s Hunter’s Den

Pezopourous frontalAustralian artist Fiona Hall has often focused her work on the interaction between humans and their natural environment. For last year’s Documenta 13 show in Germany, she turned her attention to some of the victims of the ongoing struggle between man and land: endangered animals.

Hall created a “21st century hunter’s den” filled with mounted specimens – sculptures of animals on the IUCN Red List of threatened or endangered species. She made much of their “feathers” and “fur” from military camouflage uniforms from the animals’ home territories. This is an ambiguous choice – it suggests both the negative effects of military action on animal habitats as well as the natural camouflage that animals use to protect themselves. Some of her “taxidermied” creatures look disconcertingly chipper, too – like this Australian Night Parrot (Pezoporus occidentalis / night parrot, 2009-2011). But her overall intent is highly serious: to remind us that one tragic and irreversible aspect of human conflict is animal extinction.  Ultimately, camouflage may not protect any of us.

Linkonomicon 16

It had to happen
It had to happen

1. About The Thrilling Adventures of Lovelace & Babbage book.
2. What is your cutie mark going to be? – via Nicole Gugliucci
3. How to study, and how not to study.
4. Eyes on the solar system by JPL.
5. If I made gifts like this, they would all love me…

 

Science Tourist: Biodome in Montreal

Let’s go to the Olympics! What? Too late? Oh.

Then let’s just go to an Olympic park. We’ll visit the velodrome that was built for the 1976 Olympics in Montreal.

Biodome_Montreal

I wonder what’s inside…

biodome2

What?
Continue reading “Science Tourist: Biodome in Montreal”

Don’t count the feathers: Dan Mangan, nature study and a surprise Charley Harper reference [repost]

Marie-Claire is going to be very busy over the next month educating the youth of Canada. Too busy to even listen to music, which is about her favorite thing to do, after educating the youth of Canada. In the meantime, we will be reposting some of our favorite Song of the Week posts…

The title alone of Dan Mangan‘s “About as Helpful As You Can Be Without Being Any Help At All”, from his 2011 album Oh Fortune, seems to be crying out for a comparison to graduate school experiences but that’s not nearly the most interesting thing about this song. Let me take you through my thought process on this one. Continue reading “Don’t count the feathers: Dan Mangan, nature study and a surprise Charley Harper reference [repost]”