The Immune System Explained

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Feb 232016
 

Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome.

via Kurzgesagt
 

Where Did English Come From?

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Oct 032015
 

Yale faculty member Claire Bowern explains the evolution of the English language in this animated TED-Ed video.

Enjoy!

When we talk about ‘English’, we often think of it as a single language. But what do the dialects spoken in dozens of countries around the world have in common with each other, or with the writings of Chaucer? Claire Bowern traces the language from the present day back to its ancient roots, showing how English has evolved through generations of speakers.

 

Why Do We Only See One Side Of The Moon?

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Jul 312015
 

A simple explanation on why we only see one side of the Moon from Earth.

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Only one side of the Moon is visible from Earth because the Moon rotates about its spin axis at the same rate that the Moon orbits the Earth, a situation known as synchronous rotation or tidal locking. The Moon is directly illuminated by the Sun, and the cyclically varying viewing conditions cause the lunar phases. The unilluminated portions of the Moon can sometimes be dimly seen as a result of earthshine, which is sunlight reflected off the surface of the Earth and onto the Moon. Since the Moon’s orbit is both somewhat elliptical, and inclined to its equatorial plane, librations allow up to 59% of the Moon’s surface to be viewed from Earth (but only half at any instant from any point).

Source…

 

Why Do We Only See One Side Of The Moon

 

The Origin Of The Word “OK”

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Jul 112015
 

Linguist Arika Okrent explains the origin of the word “OK.”

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“OK” is one of the most common words in the English language, but linguistically it’s a relative newbie. It’s just 150 years old, and traces its roots back to 19th century Boston. Rather than anyone purposefully inventing “OK,” it’s actually editorial joke that inadvertently went viral.

It all began in the office of Charles Gordon Greene at the Boston Morning Post, Good Magazine writes. The year was 1839, and among writerly folk, abbreviations were all the rage (think LOLZ, OMG or NBD today). “This trend,” Good continues, “produced many unsuccessful terms such as OW—an OK-like term for “oll wright” (all right) that flopped.”

OK first appeared as an abbreviation for “Oll Korrect,” printed in a satirical article about grammar, the Economist continues. The word’s origins were only revealed in the 1960s, however, when etymologist Allen Read did some digging—through suggestions that the word might come from Europe, a Civil War nickname for biscuits, or an abbreviation for the telegraph term Open Key. Still others falsely thought that president Martin Van Buren had invented the term in his presidential campaign, which used the slogan “Vote for OK” in reference to both his hometown and his nickname, Old Kinderhook, the Economist writes. But Van Buren only popularized the term, Read found, not invented it.

Although Read showed “how, stage by stage, OK was spread throughout North America and the world to the moon, and then took on its new form AOK, first used by space people and frowned on by purists,” the Economists writes, some doubters continue to insist that the word in fact has a much earlier origin. We’ll just have to be OK with never knowing for absolute sure.

Source…

The Origin Of The Word OK

 
via

Classes For Men

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May 152015
 

Classes For MenClasses for Men Now Available

Note: Due to the complexity and level of difficulty, each course will accept a maximum of eight participants each. Sign up early and get a discount on registration.

1. HOW TO FILL ICE-CUBE TRAYS. Step by step with slide presentation.

2. TOILET PAPER: DOES IT GROW ON THE HOLDERS? Roundtable discussion.

3. DIFFERENCES BETWEEN THE LAUNDRY BASKET AND THE FLOOR. Practicing with hamper. Pictures and graphics.

4. THE AFTER-DINNER DISHES AND SILVERWARE: DO THEY LEVITATE AND FLY INTO KITCHEN SINK OR DISHWASHER BY THEMSELVES? Debate among panel of experts.

5. LOSS OF VIRILITY: LOSING THE REMOTE CONTROL TO YOUR SIGNIFICANT OTHER. Help line and support groups.

6. LEARNING HOW TO FIND THINGS, STARTING WITH LOOKING IN THE RIGHT PLACE INSTEAD OF TURNING THE HOUSE UPSIDE DOWN WHILE SCREAMING. Open forum.

7. HEALTH WATCH: BRINGING HER FLOWERS IS NOT HARMFUL TO YOUR HEALTH. PowerPoint presentation.

8. REAL MEN ASK FOR DIRECTIONS WHEN LOST. Real-life testimonial from the one man who did.

9. IS IT GENETICALLY IMPOSSIBLE TO SIT QUIETLY AS SHE PARALLEL PARKS? Driving simulation.

10. LIVING WITH ADULTS: BASIC DIFFERENCES BETWEEN YOUR MOTHER AND YOUR WIFE. Online class and role-playing.

11. HOW TO BE THE IDEAL SHOPPING COMPANION. Relaxation exercises, meditation and breathing techniques.

12. REMEMBERING BIRTHDAYS, ANNIVERSARIES, OTHER IMPORTANT DATES AND CALLING WHEN YOU’RE GOING TO BE LATE. Bring your calendar or PDA to class.

13. GETTING OVER IT: LEARNING TO LIVE WITH BEING WRONG ALL THE TIME. Individual