Translate

Tuesday, August 25, 2015

Greco-Persian War Leads to Ultimate Greek Triumph

Historical overview:
https://en.m.wikipedia.org/wiki/Greco-Persian_Wars

https://en.m.wikipedia.org/wiki/First_Persian_invasion_of_Greece

https://en.m.wikipedia.org/wiki/Second_Persian_invasion_of_Greece

I. First Persian Invasion:
Judgement Day at Marathon (45:00)
http://youtu.be/4EYEeITctjg

Marathon Battle (21:53)
History Channel: Decisive Battles
http://youtu.be/ZiOwZ6XWyDQ

Marathon short version (10:37)
http://youtu.be/Cx-XB2eh-pQ

Map:
https://en.m.wikipedia.org/wiki/File:Battle_of_Marathon_Greek_Double_Envelopment.png

History lesson of events leading up to Battle of Marathon / note that written history of this event is weak, and so different historians take different stances (24:00):
http://youtu.be/wz6ICKqsP08

II. Second Persian Invasion Battle of Thermopolye (1:30:00)--
http://youtu.be/ukhc5SV2mb4

History lesson-
Battle of Thermopolye & Sea Battle of Artemisium (26:00)
http://youtu.be/hID2iXWl_Zk

Map:
https://en.m.wikipedia.org/wiki/Battle_of_Artemisium#/media/File:Battle_of_Thermopylae_and_movements_to_Salamis,_480_BC.gif

III. Sea Battle of Salamis(35:30)
http://youtu.be/HJa3Y6hawO0

History lesson-
http://youtu.be/KwDmcBsrdVE

Note: This is part of a complete series of 38 videos about Greek history (including the other Greco-Persian battles).

IV. Battle of Plataea (9:44)
http://youtu.be/pkQe8efbYDM

History lesson-
Battle of Plataea (16:27)
http://youtu.be/3X-ZjayCARo


V. Battle of Mycale (12:42)
http://youtu.be/HR_M5GsiorE
Google 'Battle of Mycale' for further info.
The history lesson series continues and leads up to the unification of Greece by Macedonian monarch Phillip II and the conquering of the Persian empire by Alexander the Great.

VI. Phillip II of Macedonia (44:21)
http://youtu.be/li2mC1mRu_E

VII. Alexander the Great (2:15:05)
http://youtu.be/DocfrH4dm28

Tuesday, August 4, 2015

Discover Magazine's 20 Things You Didn't Know About

20 Things You Didn't Know About: Inner Earth...
includes one tidbit #7 - Earth's solid and liquid cores together generate the magnetic field that keeps the solar wind from stripping away our atmosphere. [Mars has no substantial atmosphere because it's been long ago striped away by the solar wind because its inner core now lacks the degree of radioactive heat generation to generate a magnetic field like Earth does.]

Now read the other 19 tidbits at:

http://discovermagazine.com/2013/jan-feb/20-things-you-didnt-know-about-inner-earth

Note: The Discover magazine's last page is always "20 Things You Didn't Know About" on different topics. Factoids, nuggets, and tidbits on the topics you always wondered about (click on general topic OR click on specific titles or author, etcetera) from online Discover magazine:

http://discovermagazine.com/departments/20-things-you-didnt-know


MIND & BRAIN 20 Things You Didn't Know About... the Human Voice July 23, 2015 — By Jim Sullivan Think "anemone" and "Worcestershire" are mouthfuls to say? Try your tongue at speaking !Xóõ. MORE ABOUT: LANGUAGE HEALTH & MEDICINE 20 Things You Didn't Know About... Sweat May 28, 2015 — By Jessica Festa Your health, feelings and diet can change your sweat composition — but your unique sweat fingerprint is distinctly yours. MORE ABOUT: PERSONAL HEALTH HEALTH & MEDICINE 20 Things You Didn't Know About... Testosterone April 30, 2015 — By Leah Shaffer The manly hormone evolved 500 million years ago — from estrogen. MORE ABOUT: PERSONAL HEALTH HEALTH & MEDICINE 20 Things You Didn't Know About... Immortality April 2, 2015 — By Grace Halden Humans continue to seek after it, but other life forms have already achieved it. MORE ABOUT: AGING ENVIRONMENT 20 Things You Didn't Know About... Dust February 26, 2015 — By Elizabeth Preston Dust is so much more than a mess to clean up before the in-laws arrive. MORE ABOUT: EARTH SCIENCE TECHNOLOGY 20 Things You Didn't Know About... Nuclear Accidents January 22, 2015 — By Kristen Pope Nuclear meltdowns have both harmed and benefited wildlife in contamination zones. MORE ABOUT: ENERGY, POLLUTION ENVIRONMENT 20 Things You Didn't Know About... the North Pole October 30, 2014 — By Gemma Tarlach For starters, which one? There are four North Poles. MORE ABOUT: ARCTIC & ANTARCTIC SPACE & PHYSICS 20 Things You Didn't Know About... Galaxies October 2, 2014 — By Katherine Kornei The Milky Way rotates at 560,000 miles per hour, and makes a full revolution every 200 million years. MORE ABOUT: THE UNIVERSE HEALTH & MEDICINE 20 Things You Didn't Know About... Blood August 28, 2014 — By Veronique Greenwood Blood types aren't unique to humans: Dogs have more than a dozen. MORE ABOUT: PERSONAL HEALTH LIVING WORLD 20 Things You Didnt Know About... Cats August 1, 2014 — By Gemma Tarlach Where to begin? Our relationship with our feline friends goes back some 9,500 years! MORE ABOUT: PETS, ANIMALS SPACE & PHYSICS 20 Things You Didn't Know About... Noise May 23, 2014 — By Jonathon Keats Did you know the Big Bang was noiseless? MORE ABOUT: SENSES LIVING WORLD 20 Things You Didn't Know About... Animal Senses April 30, 2014 — By Molly Loomis From super-sniffers to electricity detectors, animals have an array of impressive sensory capabilities. MORE ABOUT: UNUSUAL ORGANISMS, ANIMALS LIVING WORLD 20 Things You Didn't Know About... Hoaxes March 28, 2014 — By Jonathon Keats April Fools' Day started with Julius Caesar, and 19 other things you didn't know about hoaxes. But be careful: don't believe everything you read... MORE ABOUT: ANIMALS, ARCHAEOLOGY, DINOSAURS TECHNOLOGY 20 Things You Didn't Know About... 3-D Printing February 26, 2014 — By Christian Millman 3-D printing is all the hype these days, but there's a lot about the technology that you don't know. MORE ABOUT: MATERIALS SCIENCE, GADGETS LIVING WORLD 20 Things You Didn't Know About... Neanderthals November 21, 2013 — By Jonathon Keats The hominids are depicted as degenerate and slouching because the first Neanderthal skeleton found happened to be arthritic. MORE ABOUT: NEANDERTHALS, HUMAN ORIGINS HEALTH & MEDICINE 20 Things You Didn't Know About... Hunger October 16, 2013 — By Tasha Eichenseher Get the skinny on why tummies rumble and how we might feed the world. MORE ABOUT: NUTRITION MIND & BRAIN 20 Things You Didn't Know About... Superstition September 19, 2013 — By Rebecca Coffey Knock on wood or not, superstition appears to have played a positive role in evolution and it continues to affect human behavior. Lucky us. MORE ABOUT: PSYCHOLOGY MIND & BRAIN 20 Things You Didn't Know About... Failure August 16, 2013 — By Jonathon Keats Next time you see the F-word, remember you're in good company. MORE ABOUT: PSYCHOLOGY SPACE & PHYSICS 20 Things You Didn't Know About... Gravity July 19, 2013 — By Bill Andrews The apple of Newton's eye and the focus of Einstein's work, gravity is weaker than you probably think and weirder than you probably imagined. MORE ABOUT: GRAVITY, GRAVITATIONAL WAVES HEALTH & MEDICINE 20 Things You Didn't Know About... Beer May 29, 2013 — By Christian Millman Sate your thirst for knowledge with these facts about beer's ancient origins, health benefits and surprising chemistry. MORE ABOUT: NUTRITION, FOOD SCIENCE

Saturday, August 1, 2015

Global Warming: Basics

Greenhouse gases in the atmosphere ( carbon dioxide, methane, nitrous oxide, water vapor, etc) act to slow down the escape of heat radiating from the Earth's surface just as the argon gas in my double paned windows does. Atmospheric greenhouse gases are increasing. The resulting average international temperature increases are marked by upward shifts in world wide weather patterns. When Milankovitch cycles, climatic patterns on Earth brought about by "orbital forcing", do finally begin to push towards naturally occurring global warming trends, these cycles will be amplified by our unnatural levels of greenhouse gases. Even if we had stopped releasing them yesterday, these gases will remain for millennia. At the ever increasing rates of the release of these gases, how much will our descendants suffer because of us? How much does any other issue even compare to this one? How long before we do enough about the real inconvenient truth causing global warming: human overpopulation.

http://www.explainthatstuff.com/globalwarmingforkids.html

http://www.nrdc.org/globalwarming/f101.asp

http://www.justfacts.com/globalwarming.asp