Happy 43rd birthday, David! (April 18th, 1971)
Giant liposomes of pulmonary surfactant (40x)
(via Giant liposomes of pulmonary surfactant | 2-photon | Nikon Small World)
My eyes are bleeding…The depths of a sinner’s eyes are infinite dark… (Then look at inside of mine…)
writing adult emails is awful
hi [name of person],
this formatting is making me uncomfortable but I have to tell you something / ask you something that is vital to my career as a student.
I re-read and edited that sentence for an hour, but you’ll probably just glance over it for half a second.
please don’t flirt with people i secretly like it’s rude and disrespectful
Some of y’all need to ship yourselves with some common sense
Dad: Why do you think they do that?
Girl: Because the companies who make these try to trick the girls into buying the pink stuff instead of stuff boys want to buy. [x]
that awkward moment when a child understands the harm of forcing gender roles better than most grown male politicians.
I’m surprised that I haven’t reblogged this, to be honest.
I love that last gif. She looks so frustrated. Like “Um, hello, obviously girls and boys can like anything why doesn’t anybody get that???”
She does have a point though..
Kids who are smarter than adults though.
i need this child
As reported in a paper published online today in the journal Nature, Caltech biologist David J. Anderson and his colleagues have genetically identified neurons that control aggressive behavior in the mouse hypothalamus, a structure that lies deep in the brain (orange circle in the image). Researchers have long known that innate social behaviors like mating and aggression are closely related, but the specific neurons in the brain that control these behaviors had not been identified until now.
The interdisciplinary team of graduate students and postdocs, led by Caltech senior research fellow Hyosang Lee, found that if these neurons are strongly activated by pulses of light, using a method called optogenetics, a male mouse will attack another male or even a female. However, weaker activation of the same neurons will trigger sniffing and mounting: mating behaviors. In fact, the researchers could switch the behavior of a single animal from mounting to attack by gradually increasing the strength of neuronal stimulation during a social encounter (inhibiting the neurons, in contrast, stops these behaviors dead in their tracks).
These results suggest that the level of activity within the population of neurons may control the decision between mating and fighting.
The neurons initially were identified because they express a protein receptor for the hormone estrogen, reinforcing the view that estrogen plays an important role in the control of male aggression, contrary to popular opinion. Because the human brain contains a hypothalamus that is structurally similar to that in the mouse, these results may be relevant to human behavior as well.