A rather telling look at food spending as a percentage of household spending around the world.

digg:

self portratis by paul zizka in banff national park (see also: victor liu and previous posts of the aurora and milky way)

Great graphic from James Kennedy (@VCEasy) comparing natural & artificial peaches.

Interesting infographical look at how a few thousand years of human intervention can result in a deliciously juicy summer treat. Most interesting? The percentage of sugar a peach holds has not gone up that much, only the edible flesh ratio and percent water have.

I should add that in this graphic, “artificial” just means that the modern peach was artificially selected by farmers who chose which variants to propagate, as opposed to being subject to the unguided processes of natural selection. I worry about the misconception that “artificial” here might be misconstrued into meaning “inferior” or “dangerous” or “fake”. It is none of those things.

Don’t fear the fruits of science. Especially the juicy ones.

(Breaking down the chemical fear and overuse of scare quotes that surround the “natural vs. artificial” food movement is the whole point of James Kennedy’s infographics, like his famous list of ingredients in an all-natural banana, I just want to make sure that it comes across to people not familiar with his work!)

Meet

Anoxycalyx joubini, an Antarctic volcano sponge (it’s the one not wearing a wetsuit). It’s estimated that some slow-growing specimens may be up to 15,000 years old, making them the oldest living animals on Earth. Most live in such deep, frigid waters that they will never be seen face-to-face by human divers, whose entire known history has occurred in less than one spongy lifetime.

Image via Project SCINI/Cal State

Can someone from the sciencey side of tumblr please explain this ?

This is called shape memory. It’s made from an alloy of titanium and nickel (I believe it’s called nitinol). It has the ability to “remember” the shape it’s taken.

When cold you can bend it whatever which way, but once you heat it (or in this case put it in what I presume is hot water) it will take the original shape.

WHAT!!?!?!?!?

MATH MYTHS: (from Mind over Math)

1. MEN ARE BETTER IN MATH THAN WOMEN.

Research has failed to show any difference between men and women in mathematical ability. Men are reluctant to admit they have problems so they express difficulty with math by saying, “I could do it if I tried.” Women are often too ready to admit inadequacy and say, “I just can’t do math.”2. MATH REQUIRES LOGIC, NOT INTUITION.

Few people are aware that intuition is the cornerstone of doing math and solving problems. Mathematicians always think intuitively first. Everyone has mathematical intuition; they just have not learned to use or trust it. It is amazing how often the first idea you come up with turns out to be correct.3. MATH IS NOT CREATIVE.

Creativity is as central to mathematics as it is to art, literature, and music. The act of creation involves diametrical opposites—working intensely and relaxing, the frustration of failure and elation of discovery, satisfaction of seeing all the pieces fit together. It requires imagination, intellect, intuition, and aesthetic about the rightness of things.4. YOU MUST ALWAYS KNOW HOW YOU GOT THE ANSWER.

Getting the answer to a problem and knowing how the answer was derived are independent processes. If you are consistently right, then you know how to do the problem. There is no need to explain it.5. THERE IS A BEST WAY TO DO MATH PROBLEMS.

A math problem may be solved by a variety of methods which express individuality and originality-but there is no best way. New and interesting techniques for doing all levels of mathematics, from arithmetic to calculus, have been discovered by students. The way math is done is very individual and personal and the best method is the one which you feel most comfortable.6. IT’S ALWAYS IMPORTANT TO GET THE ANSWER EXACTLY RIGHT.

The ability to obtain approximate answer is often more important than getting exact answers. Feeling about the importance of the answer often are a reversion to early school years when arithmetic was taught as a feeling that you were “good” when you got the right answer and “bad” when you did not.7. IT’S BAD TO COUNT ON YOUR FINGERS.

There is nothing wrong with counting on fingers as an aid to doing arithmetic. Counting on fingers actually indicates an understanding of arithmetic-more understanding than if everything were memorized.8. MATHEMATICIANS DO PROBLEMS QUICKLY, IN THEIR HEADS.

Solving new problems or learning new material is always difficult and time consuming. The only problems mathematicians do quickly are those they have solved before. Speed is not a measure of ability. It is the result of experience and practice.9. MATH REQUIRES A GOOD MEMORY.

Knowing math means that concepts make sense to you and rules and formulas seem natural. This kind of knowledge cannot be gained through rote memorization.10. MATH IS DONE BY WORKING INTENSELY UNTIL THE PROBLEM IS SOLVED. Solving problems requires both resting and working intensely. Going away from a problem and later returning to it allows your mind time to assimilate ideas and develop new ones. Often, upon coming back to a problem a new insight is experienced which unlocks the solution.

11. SOME PEOPLE HAVE A “MATH MIND” AND SOME DON’T.

Belief in myths about how math is done leads to a complete lack of self-confidence. But it is self-confidence that is one of the most important determining factors in mathematical performance. We have yet to encounter anyone who could not attain his or her goals once the emotional blocks were removed.12. THERE IS A MAGIC KEY TO DOING MATH.

There is no formula, rule, or general guideline which will suddenly unlock the mysteries of math. If there is a key to doing math, it is in overcoming anxiety about the subject and in using the same skills you use to do everything else.

Source: “Mind Over Math,” McGraw-Hill Book Company, pp. 30-43.Revised: Summer 1999

Student Learning Assistance Center (SLAC)

Southwest Texas State University

James Lopez is a veteran Disney animator (

The Lion King,Pocahontas,Paperman) who is trying to raise funding for his primarily hand-drawn short film,Hullabaloo, with hopes of eventually finding a studio to fund a full-length version.From the film’s IndieGo page:

Hullabaloois the story of Veronica Daring, a brilliant young scientist who returns home from an elite finishing school to find her father—the eccentric inventor Jonathan Daring—missing without a trace! The only clue left behind points Veronica toward Daring Adventures, an abandoned amusement park used by her father to test his fantastical steam-powered inventions. There she discovers a strange girl named Jules, a fellow inventor who agrees to help Veronica in locating her missing father and discovering the secrets of his work.

In addition to helping save 2D animation,Hullabalooaims to encourage girls to explore science and adventure. The film’s two protagonists are both young women and both scientists who use their intellect, wits, and courage to fight greed and corruption. We hope that Veronica Daring and her friend Jules will serve as positive role models for girls of all ages and encourage them to get excited about science, engineering, and sci-fi.To see some footage and a short video pitch from Lopez, click here.

Learn to code while playing Minecraft

Did you know that you can learn programming while playing a video game? A team of computer scientists at the University of California, San Diego, has developed LearnToMod, software that teaches kids introductory programming with Minecraft. Students will learn JavaScript, the essential programming language of the web, and can also earn University of California college credits, regardless of their age.“Our goal is to teach kids computer science while they’re having fun.”

Read more about how UC San Diego computer scientists are teaching programming with Minecraft.

an

Almostperpetual motion machine.Perpetual motion is motion that continues indefinitely without any external source of energy. meaning a system in perpetual motion will never stop going, so efficiency is 100% or more - meaning either no energy is ever lost in the system or a surplus “free” energy is generated.

this is theoretically impossible as it violates the first law of thermodynamics (that is the law of conservation of energy that states that energy can neither be created nor destroyed). however, the above set up is one of the closest ever gotten to perpetual energy with an efficiency of 80-99%, an internal combustion engine in a car has around 30% for comparison.

at up to 99%, the rolling ball can continue rolling for years on its own, but will at some point stop. only at 100% efficiency is it

perpetualwhich is not theoretically possible.