Michael rotnitsky

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The history of why pi equals 3.14(15926…)

The number represented by pi (π) is used in calculations whenever something round (or nearly so) is involved, such as for circles, spheres, cylinders, cones, and ellipses. Its value is necessary to compute many important quantities about these shapes, such as understanding the relationship between …

5 Scary Things That Happen to Your Penis When You Age

You may be healthy and active, but that doesn’t mean your penis won’t be experiencing these insane changes as you get older<p>This is not a story about what <i>might</i> happen to your penis as you age. It’s not about potential risks or Any of These Crazy Penis Conditions that happen when, say, you …

15 Things All Women Think When They Buy Their First Vibrator

Do I really want this alien loofah inside me? Yes. Yes I do.<p><b>1. You know what? Yes.</b> I don’t have a boyfriend, and even if I did, Real Women Own Vibrators. It doesn’t mean I “can’t get laid!” It was on <i>Sex and the City</i>, and Casey from my dorm has one, and Casey’s really pretty.<p><b>2. I don’t want to go to</b> …

12 Things Guys Wonder About Your Vibrator

That looks rather, uh, large?<p><b>1. Does that whole thing go inside you?</b> Like, all of it? That looks so long. Is your vagina like a magician’s sleeve?<p><b>2. What does it feel like?</b> Is it like driving on the rumble strips on the side of the highway except with your vagina? I kinda of picture it like the …

9 Deodorizers to Eliminate Your Worst Smells

You stink. I stink. We all reek a bit on occasion, and it worries us. Who hasn't sniffed his own pits before picking up a date?<p>"A repulsion to bad smells is deep in the genome," says Avery Gilbert, Ph.D., president of the Sense of Smell Institute. "At some primitive level, to be stinky means to us …

Why Are All My Girlfriends So Tired?

They just keep falling asleep on me.<p>The other night, my girlfriend passed out on me. Full-blown, deep sleep, couldn’t wake her up if I tried. She was talking with me animatedly one minute, and snoozing the next. When she finally came to, she groggily asked for some jewelry she had left behind …

8 Fatty Foods With Health Benefits

Quit depriving yourself and start eating these eight fatty foods—no guilt necessary<p>For years you’ve heard that eating saturated fat is like pouring superglue into your arteries. But the fact is, this forbidden fat actually increases your HDL (good) cholesterol, which helps remove plaque from your …

The 16 Best Wines for Less than $15

When it comes to wine, expensive doesn't necessarily mean better. There are lots of great wines out there that cost less than $15. To help you save a few bucks without looking like a vino virgin, we turned to three of the nation's top wine experts for their favorite wallet-friendly picks. Click …

19 Things You Never Knew About Kissing

Did you know that kissing happens with two mouths? JK, these facts are more interesting than that.<p><b>1. You practiced your kissing stance in the womb.</b> Two-thirds of people tilt their head to the right when they kiss. Weirdly, this is a habit you might pick up before you're even born, according to …

How to Hack Your Body to Live Past 120

A high-profile group of futurists is exploring the possibility of extending human life. How will they do it? Treat the body like a computer.<p>For as …

The 10 Best Free Apps for Travel Junkies

Odds are you use no more than two travel apps to get from point A to point B, and that’s fine — surveys show you’re not alone.<p>But consider for a …

11 Brides Who Gave Their Wedding Dresses Mind-Blowing Makeovers

Because your wedding dress is way too beautiful to wear just once.<p><b>1.</b> Christina D. paired the tulle skirt of her gown with a casual chambray shirt for her wedding anniversary photo shoot.<p><i>Photo courtesy Kriea Arie/Larissa Nicole</i><p><b>2.</b> Artemis turned a flowy boho-chic gown into a versatile daytime dress …

51 of the Best Breakfast Recipes Ever

Waking up is never easy, but breakfast food makes the prospect a whole lot sunnier.<p>Put some coffee on and get cookin'.<p><b>Monkey-Bread Danish</b><p>Danish meets monkey bread. <b>Get the recipe</b>.<p><b>Red Velvet Pancakes</b><p>Sexiest breakfast ever. <b>Get the recipe</b>.<p><b>Onion & Arugula Frittata</b><p>Served straight out of the pan. <b>Get the</b> …

Breakfast

The complete guide to productivity

<i>This post originally appeared on The Growth List</i><p>Let’s face it.<p>We all want more time in our lives.<p>It could be an evening to spend more time with our family and friends, a 30-hour day to grow our business, or simply time to close our eyes and relax.<p>If you would like to make more effective use of your …

18 Things You Should Know About Sleep, According To A Sleep Doctor

"The brain craves routine for good sleep."<p>For more on this topic, feel free to browse the Reddit thread or check out Dr. Verma's blog PeerWell.

Why Apple Watch apps should be usable in 10 seconds or less

As Apple reportedly prepares developers to ready the first batch of Apple Watch apps, the company is setting a guideline: Try to keep your app usable …

How to Take Charge of Your Sexual Stamina: 3 Secrets Every Evolved Male Lover Should Know

<b>Get more sexual stamina. Give more pleasure to your partner. Get rocked by earth-shattering orgasms. Experience profoundly deepened connection through sex.</b><p>Got your attention?<p>Cool. I'm not just using these words to fake you out. If any of the above sound like things you'd like to experience there's …

Positive Thinking

10 Sex Truths They Don't Teach You in High School

You learned nothing—NOTHING.<p>Eleventh grade health class left us with a lot of unanswered questions—primarily, since when is a gym teacher qualified to demonstrate all the intricacies of birth control and sex? Seriously, if people like Coach Carr are teaching the future leaders of the America about …

High School

10 Things You Never Knew About Your Vagina

Wait, how is my vagina similar to a glass of wine?<p>The way I see it, there's no way anyone can know everything about her vagina. There have to be some rarely known facts about vaginas that only doctors or scientists know. So when I went looking for these facts, most of them seemed like there was no …

COOL HUNTING Six Cocktails for Great Whiskey

The extensive, alluring worlds of whiskey, Scotch and bourbon can feel daunting to novice drinkersespecially when there’s an expectation to drink it neat or with a bit of water. For an easier entry point into one of the most nuanced areas of the spirits market, there really are great cocktails for …

Whiskey

5 of the Hottest Barbecue Trends for 2015

2015 already? Seems like I just sat down to write last year's predictions. So here's a look at my crystal ball for Planet Barbecue 2015. (Many of my predictions for last year came true, like Really Big Steaks and Cocktails Get Smoked.)<p>I write these words on a flight from Los Angeles to Miami. Which …

BBQ

What Happens to a Woman's Brain When She Becomes a Mother

From joy and attachment to anxiety and protectiveness, mothering behavior begins with biochemical reactions.<p>The artist Sarah Walker once told me that becoming a mother is like discovering the existence of a strange new room in the house where you already live. I always liked Walker's description …

Pregnancy

These GIFs Show the Freakishly High Definition Future of Body Scanning

General Electric<p>1 of 4<p>General Electric released images on Wednesday from its first clinical trial of a next generation body scanner that captures …

15 Fresh Juice Recipes to Start Your Day

Gallery15 Fresh Juice Recipes to Start Your Day<p>We adore a freshly squeezed glass of OJ—especially in winter, when citrus is at its peak—but sometimes you want something a little more unusual. Ever tried to juice a kumquat? Or a sweet potato? Curious about how to make good-tasting green juice? <b>Here</b> …

Florida’s Hurricane Dry Spell Lasts

It’s Been Nine Years Since a Major Storm Made Landfall, but the Insurance Buffer Still Looks Shaky<p>As storm season comes to an end with Florida enjoying its modern-day record ninth consecutive season without a hurricane making landfall, many residents of the Sunshine State may not want to breathe …

Florida