Well I wanna find out what you people think is the most important and useful invention ever to discovered or invented in our planets history..thanks
201732
i would say the AC/DC motor. Invented far ahead of it's time and still being used today.  From air conditioners to alternators, even electricity from Hydroelectric dams. The best invention that's keeps on giving for free.  Generators that if you turn create electricity or if Fed electricity it would turn.  Works one way and same thing the other way around.  Also the wheel it was a beautiful invention and still is in use today.
118700
This is sort of like the chicken and/or the egg. But The principle (undoubtedly) was discovered, but the implementation of the object was invented - ie it is the combination of axle, hub, and bearing that is the invention, allowing a wheel to be attached to a cart or similar, to make it useful.\n\n The idea of perpetual motion is nothing new. It was discovered and proven in the beginning of the 18 century. The invention was a working system using the gravity force to power the wheel. This made the inventor famous in history. \n\nThus, in summation, I firmly believe that the wheel was discovered just by observing nature but the axle, etc was invented.
634248
I'd say you should talk about making mistakes\n\nAmerica was discovered by mistake\nGun powder was invented by mistake\nelectric chair was first tested by mistake .\n\nThere are thousends like these ! they'r intresting and easy .Best of luck
197674
http://inventors.about.com/library/weekly/aa080499.htm click d link to find what u r looking for.
217541
In my opinion best thing invented by man is electric power.Its help to develope indusry ato a greate extent
515281
What a brilliant idean you come up with. Salute!!!
463182
transporters will perform that function eventually throughout the solar system ! for work, dates, vacations, shopping, school, research, etc., our great grand children to the 5th power will consider it normal. and yes successful sub atomic transportation has already been sucessfully tested and is growing with leaps and bounds and will completely change our world as we know it !
7054
An invention: Cellborg ( http://www.livescience.com/technology/051027_cellborg_sensor.html ) massive potential to become useful in our lifetimes\n\nA discovery: new blackhole ( http://www.space.com/scienceastronomy/050509_blackhole_birth.html ) very little potential to become useful in our lifetimes, but oh so cool\n\nOffbeat: monkeys have accents ( http://news.yahoo.com/s/afp/20051129/od_afp/japananimalsoffbeat ) it has to do with monkeys and I personally find study language fascinating
418399
another scientific invention....of course!!!....maybe, ppl start to live on planets or even moon??!!......u never know!
259790
Discovery of the 10th planet!  Recent discovery.  Not much info. yet so no one can say if you are wrong on any point!
239691
This is somewhat an opinion question, but I'll give my opinion on the top 10 achievements:\n\n1.  First man on the moon\n2.  First mission to another planet (Mariner, Venus)\n3.  First probe to leave the solar system \n4.  Hubble Space Telescope\n5.  Voyagers I and II\n6.  Development of the Space Shuttle\n7.  Infrared Astronomical Satellite\n8.  SOHO (Sun observation satellite)\n9.  Galileo mission to Jupiter\n10. Cassini mission
254032
Lets see how nifty each planet is!!!  xD\n\nMercury:  It has extremly hot days and extremly cold nights!!  Everyday while the sun is shining you could go swimming!  Or stuff like that!  But you couldn't plant a garden.  =(  But you COULD grill hambergers without spending a billion and two bucks with a grill.  You wouldn't have to use the microwave in order to make hot coco  At night it's cold, you could make a dirt snowman. o.0 there is no snow on Mercury.  Or you would watch your bugers freeze and you could keep your icecream all nice and cold! ^_^\n\nVenus:  Extremly acidic weather, pretty nifty! Robots disinagrate in it's weather in 2 hours.  Pretty dang nifty if you ask me!  Enough has been told!!!  ♥ Venus\nEarth:  Our home planet, pretty senery, accual trees and lakes here!\n\nMars:  Has 3 mile high mountain, Mount Olympus!!! ((is that what it's called?)) *drools*  Scale it!  Live it!  Rock climbing!  Repelling!  falling off of it!!!  *ohh that's fun*  It has burly a land scape, but who cares?  With a VERY tall mountain!  ^_^\n\nJupiter:  Biggist hurricane in the solar system, a lot of moons, each comes with a different theme!  *Europa would be cool*  Is the biggest planet in the solar system!!!\n  \nSaturn:  Nifty rings!!  Can float in water!  Is the lightest planet EVER and a really big one also!  Almost as big as Jupiter!  Has a really cool color!  The rings would be so awsome to invent sports on!  To make colonies there, to put theme parks there!  Ohh heaven!\n\nNeptune:  Pretty blue planet, freakish weather with the Scooter going around it every once in a while!  Pretty big with nifty moons!  Very calming to look at, and day and night you could see the stars!!!\n\nUranus:  It's axis are totaly messed up!  Insted of horozontal they're virtical!  It would be so cool to see the sun!  Has a greenish color, its atmosphere has a lot of ammonia so you don't really need to go buy the Pine Sol in order to clean your bathroom!  Very nice color, very nice moons, and you can see the crystal clear sky with the stars glistening, and the ring around it!\n\nPluto:  Cold!  Ice!  2-3 miles round!!  Small small SMALL!!!  It's moon is 2/3 the size of it, scientists wonder if it should even be called a planet, or at least both of them planets!  Pretty nifty\nSedna:  Don't know about it!\nPlanet X:  Does it RLLY exist???\n\nIndesisive!!!  Love Saturn's rings, love Mars and Neptune.  I would go with either Uranus or Mars.  ^_^
144553
http://inventors.about.com/od/mstartinventions/a/microscope.htm
550237
I know it could be an invention in some way(s), because the American government was the first ones to say there was a UFO. Majority Americans were the ones to created the word or idea of aliens, except for the "Dropa stones" in China/Asia, which humming discs tell a story of outside life crashing a spaceship on planet earth long millenia ago. Interesting... hmmmm.
438535
The one video shows what looks like something much larger than insects.Until people have had some sort of contact or psychic impression such as Remote Viewing it's too soon to tell.Maybe they are as one person said some type of probe. It could be possible for other civilizations to create organic devices or to mimic them. These might also be some sign of a return of a certain species or about some climactic event that's about to happen here.Yea I think I'll go with probes. Maybe nano probes?
183915
Yes, modern day inventions are fascinating. Imagine the stuff that companies have developed but have not shown us. Just the other day, I was reading about quantum teleportation and about creating force fields with plasma. It is amazing how far we have come and where our imagination can take us.
206917
There are an estimated dozens of thousands of lifeforms still undiscovered on our planet.\n\nInvention: you came up with something, had an idea and made it work.\n\nDiscovery: you came across something no one else has, officially or unofficially.\n\nThere is speculation from astronomers that there is another system like ours. Opinion: there has to be.