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https://www.youtube.com/embed/mMwn5AaBBh0 Eat right, exercise, don’t watch too much TV, keep your brain healthy, don’t smoke, don’t drink too much, don’t drink too little… advice for prolonging life is everywhere, but maybe you’re not living wrong, you’re just living in the wrong place. Sup cotton-top wannabes, Trace here for DNews. Getting older is inevitable and in some places the drudgery of aging is as apparent as grey clouds rolling over a sunny day, but that’s not always the case. In his 2011 book, “The Blue Zones” Dan Buettner used census data to find the regions of the world where people live the longest — Okinawa, Japan; Sardinia, Italy; Loma Linda, California; the Nicoya Peninsula, Costa Rica… he called these areas Blue Zones. Living in each of these “zones” have mysterious benefits: Okinawa boasts the longest disability-free life-expectancy, and Nicoya Peninsula residents have four-times the chance of reaching age 90 than the…

https://www.youtube.com/embed/qmfXyR7Z6Lk You’ve probably noticed that we’ve been talking an awful lot about fractions around here lately. Well, now I’m going to tell you something you can do with fractions that’s really easy. No, no… not juggling fractions. [circus music] Although that is pretty easy… for me. I’m talking about something even easier than that. I’m talking about multiplying fractions.Multiplying fractions is super easy. In fact it’s easier than adding fractions, and that’s why we’re going to learn it first. The reason it’s easier is because fractions are really just division problems. And multiplication and division get along much better than addition and division. Now since fractions are division, that means if I have the problem one-fourth times two-thirds, it’s the same as the problem: 1 divided by 4 times 2 divided by 3. That means I’ve got both multiplication and division in the same problem. And because they get along…

https://www.youtube.com/embed/xREb5exvPho Reason number 1,215 for why science rules: it turns out, we’re all putting in way too much time at our jobs! Science says: work less! Hey there working stiffs, Trace here for DNews! Like many of you out there, I have a full-time job. This. And I generally put in 40 hours a week, or a lot more. But new research out of Australia suggests that I may be putting my health at risk. The study published in the journal Social Science & Medicine sampled roughly 3,800 men and 4,000 women to get an idea of how working for a long time would affect their health. They found that on average, working more than 39 hours per week led to a decline in mental health. Researchers think this is because it gives you less time to eat healthy meals and to take care of yourself.And there were actually pretty…

https://www.youtube.com/embed/6io7id17smM In this video we’re talking about half life. and in this particular problem we’ve been asked to find the half-life of Radium-226 if its decay constant is 0.000436. So the particulars of this problem, the fact that we’re dealing with Radium-226, or that the decay constant is this specific value, those things aren’t really important. The important part is the process we’re going to use to find half-life. And this formula here is what we’re going to be starting with. So, first of all, when we say half-life, half-life means the amount of time it takes for a substance to decay to half of its original amount. So for example if we started with 100 grams of Radium-226, Radium-226, let’s just abbreviate it this way. The half-life of Radium-226, if we can find it, will tell us how long it’ll take for this 100 grams of Radium-226 to decay…

https://www.youtube.com/embed/8an6x-NLfIc I’Ve often been asked whether if I had to do it all over again, would I be a physicist Of course I would be a physicist. It uses my skills at mathematics. It makes contact with the world. It helps me feel that I understand how the world works. When I was about 8 years old, I used to read everything that came through the house, including comic books, One image from a science comic book, particularly stuck with me over the years. This was an image of an atom At the centre there was a proton and around the proton, an electron round and around There is the electron. This electron, however, was peculiar different from other electrons, because it had on it little people And these little people had their own lives their own things that they did. My latest scientific work was based upon an image…

https://www.youtube.com/embed/PeWGjTZX14c Hi I’m mark Prosser were involved today. We’Re gon na be talking about saving spots, not exactly the most exciting topic on the planet, but the same spot is from the US Treasury the safest place in the planet, and you get a chance to run through 10 % of you. How? There are three point: five percent interest on US savings bonds, simple by me series your savings bonds sounds too good to be true. You must be thinking. What’S the catch, there’s one cat chance, a big one. It cannot redeem the savings bonds until maturity, which is 20 years after the bond is issued. If you need to cash in the bond, they’ll earn a measly 0.6 % minus a withdrawal penalties. There is another catch, the maximum amount of EE bonds a person can purchase in a given year is only $ 10,000. This 3.5…

https://www.youtube.com/embed/r6Q2Vr1JUGo This year for Valentine’s Day an estimated $116 will be spent per person on their valentine. Of the popular gifts, candy is number one. But if you truly love your valentine, you might be willing to put in that extra effort. And make that box of chocolates entirely from scratch. But what exactly would that involve? Well, I’m going to find out. The first step for making my chocolate bar entirely from scratch would be harvesting the fruit of a cacao tree.Since cacao is not native to Minnesota I’m going to have to head south to Mexico. There I met with José, who allowed me to harvest some of his cacao trees. I found it incredibly captivating to handle these strange, alien looking pods that just grow out of a tree. I”d never really made the connection that the delicious chocolate we eat, actually comes from a trees fruit.…

https://www.youtube.com/embed/_jcW-ZgpRbM Now that we know the basics of how decimal numbers work, let’s see how we can write some special fractions using decimal numbers. I’m going to call these fractions “Base 10 fractions” because their bottom numbers are all ‘powers of 10’, like 10, 100, or 1,000. Let’s start with this fraction: one over ten. You should recognize that. It’s one of our building blocks. And this should be easy to write as a decimal number because we have a number place just for counting tenths.So all we have to do is put a ‘1’ in the tenths place like this: zero point one Now when you write decimal numbers, it’s important that you always include the ones place. But since we don’t have any ones, we just put a zero in that spot. The zero makes the decimal point easier to see. Alright… so that’s one tenth, but what…

https://www.youtube.com/embed/do_IbHId2Os In the last section, we learned how to convert some special Base 10 fractions into decimals, and vice versa. Now, were going to learn how to convert ANY fraction into a decimal. And it turns out to be really simple… all you have to do is divide. Since a fraction is really just a division problem, if you go ahead and DO the division, you’ll get an answer, and that answer will be the decimal value of the fraction. Now there’s two ways we can do the division …the easy way, and the hard way. Now just because I’m mean, we’re going to start with the hard way. Let’s take the fraction one-half and convert it into a regular division problem with this division symbol.Now, all we have to do is follow the procedure for division. We just see how many times this ‘2’ divides into this ‘1’. Uh…