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Gaia Identifies a Stellar Gap
There is a gap in the Hertzsprung-Russell diagram in the middle of the M-dwarfs, possibly due to as-yet unknown physics involving a transition from mostly-convective to fully-convective stars.
science  physics  astronomy  space 
19 days ago by pozorvlak
How To Think Real Good | Meaningness
Figuring stuff out is way hard.
There is no general method.
Selecting and formulating problems is as important as solving them; these each require different cognitive skills.
Problem formulation (vocabulary selection) requires careful, non-formal observation of the real world.
A good problem formulation includes the relevant distinctions, and abstracts away irrelevant ones. This makes problem solution easy.
Little formal tricks (like Bayesian statistics) may be useful, but any one of them is only a tiny part of what you need.
Progress usually requires applying several methods. Learn as many different ones as possible.
Meta-level knowledge of how a field works—which methods to apply to which sorts of problems, and how and why—is critical (and harder to get).
research  rationality  ai  drugs  science  medicine  computers  intelligence 
5 weeks ago by pozorvlak
Why Sexism and Racism Never Diminish-Even When Everyone Becomes Less Sexist and Racist - Marginal REVOLUTION
"But our studies suggest that even well-meaning agents may sometimes fail to recognize the success of their own efforts, simply because they view each new instance in the decreasingly problematic context that they themselves have brought about."
science  cogsci  psychology  socialjustice  abuse  racism  sexism 
5 weeks ago by pozorvlak
Photo of person picking up extremely deadly blue-ringed octopus, displaying stress patterns
IF you are going to survive the ALMIGHTY CONE SNAIL, WHO KNOWS NO FEAR, TRIUMPHANT HEDGEMON OF THE MOLECULAR ARMS RACE, TRUE BORN HEIR TO THE SCYTHE OF DEATH ITSELF, FISHSLAYER, GOD AMONG MOLLUSKS, WHOSE WRATH IS MERCIFUL ONLY IN ITS BREVITY, ADMIRABLE IN ITS BEAUTY AND UNSULLIED BY THE UNWORTHY TOUCH OF MORTAL HANDS OR SCALES OR REALLY ANYTHING IN RANGE OF ITS RADULA HARPOON, then literally the only thing that’s going to save you is for you to be kept alive artificially (externalizing your respiratory functions to force your body to continue breathing, basically) until the effects of the venom wear off. And because of how quickly this venom acts, you need to get that medical attention VERY, VERY FAST.

And if you don’t get it, you will still be conscious while the paralysis slowly suffocates you to death.

Don’t touch the pretty shells.
photos  bio  snails  oceans  death  octopodes  science 
6 weeks ago by pozorvlak
Drugs for bad bugs: confronting the challenges of antibacterial discovery | Nature Reviews Drug Discovery
Discovering new antibiotics is really hard, and genomic approaches have not helped at all.
medicine  science  genetics 
6 weeks ago by pozorvlak
Effects of different cooking methods on health-promoting compounds of broccoli
The effects of five domestic cooking methods, including steaming, microwaving, boiling, stir-frying, and stir-frying followed by boiling (stir-frying/boiling), on the nutrients and health-promoting compounds of broccoli were investigated. The results show that all cooking treatments, except steaming, caused significant losses of chlorophyll and vitamin C and significant decreases of total soluble proteins and soluble sugars. Total aliphatic and indole glucosinolates were significantly modified by all cooking treatments but not by steaming. In general, the steaming led to the lowest loss of total glucosinolates, while stir-frying and stir-frying/boiling presented the highest loss. Stir-frying and stir-frying/boiling, the two most popular methods for most homemade dishes in China, cause great losses of chlorophyll, soluble protein, soluble sugar, vitamin C, and glucosinolates, but the steaming method appears the best in retention of the nutrients in cooking broccoli.
food  cooking  science  bio 
6 weeks ago by pozorvlak
Is there a difference between fresh, frozen, and canned vegetables? |
Although blanching can leach out minerals and break down biomolecules like vitamins, postharvest-ripened produce and blanched frozen produce have very similar overall nutritional content.

Canned vegetables are likely to be more heavily processed and may have BPA in them.
food  science 
6 weeks ago by pozorvlak
Random Thoughts: Inspiration Venus? | Selenian Boondocks
Have your scientists in an orbit 45 light-seconds from Venus, but not orbiting Venus itself - gets you most of the benefits, but saves tons of delta-v.
space  science  venus 
7 weeks ago by pozorvlak
Watch "Snow anchors: how strong are they?" on YouTube
Place snow stakes with the convex surface towards the load, and leaving away from the load at 25°. In dense wet snow, a buried Coke bottle can be enough to abseil from!
alpinism  climbing  science  video 
12 weeks ago by pozorvlak
Watch "How to make a climbing lanyard" on YouTube
ENSA recommend using lanyards made from dynamic rope - daisy chains, PASes, slings etc fail under low fall factors.
climbing  science 
12 weeks ago by pozorvlak
The Physics—and Physicality—of Extreme Juggling | WIRED
The world's best numbers juggler can throw and catch 14 balls. Once. Has he reached juggling's limit?
science  physics  juggling  training 
12 weeks ago by pozorvlak
MIT and newly formed company launch novel approach to fusion power | MIT News
Development of fusion power, a carbon-free, combustion-free source of energy, is now on a faster track toward realization, thanks to a collaboration between MIT and a new private company, Commonwealth Fusion Systems. CFS will join with MIT to carry out rapid, staged research leading to a new generation of fusion experiments and power plants based on advances in high-temperature superconductors.
science  fusion  nuclear 
may 2018 by pozorvlak
Obama's Secret Weapon In The South: Small, Dead, But Still Kickin' : Krulwich Wonders... : NPR
States in the Deep South traditionally vote Republican in every presidential election. However, a string of "blue" counties curve through Mississippi, Alabama and Georgia. And the reason for this political anomaly seems to lie with ancient oceans and dead plankton.
maps  politics  geology  science  usa  slavery 
april 2018 by pozorvlak
The Minimal Persuasive Effects of Campaign Contact in General Elections: Evidence from 49 Field Experiments by Joshua Kalla, David E. Broockman :: SSRN
We argue that the best estimate of the effects of campaign contact and advertising on Americans’ candidates choices in general elections is zero.
politics  science  elections  advertising 
february 2018 by pozorvlak
Upgrade your cargo cult for the win | Meaningness
Richard Feynman derided “cargo cult science” that sticks to fixed systems. Innovation requires an upgrade to fluid, meta-systematic inquiry.
science  badscience  rationality 
december 2017 by pozorvlak
“Mirror, mirror on the wall | Corvid Research
am I the smartest of them all?" ...Is not a question crows are asking, despite what you may have heard.  Because they, like basically all the super smart birds, are really, really bad at the mirror test. This might contradict what you've heard elsewhere.  But the reality is that corvid after corvid fails the mirror…
magpies  corvids  birds  psychology  badscience  science 
november 2017 by pozorvlak
Bad Astronomy | One last look at Saturn
RT @BadAstronomer: You deserve to do yourself favor: Take in the serene majesty of this one, final image of Saturn from Cassini.
space  astronomy  science  saturn  photography  photos 
october 2017 by pozorvlak
RT : 'You're a scientist so you must be pretty smart...'
july 2017 by pozorvlak
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