And while they all touched on similar themes, they drew some pretty different conclusions.
And 40 years ago, when Gaylord conceived and celebrated the first Earth Day, the world looked pretty different.
His big scientific conclusion, that people are actually pretty different from each other on a genetic level, is no surprise to geneticists.
Little things like whether the air conditioner is on while you drive can affect mileage, and the way the EPA tests mileage is pretty different from the way most people drive their cars.
Visitors to his beach house in the Comoros might find him, surrounded by his children from seven different pretty women, sipping tea under a frangipani tree.
But other research suggests that seeing color can be something like tasting foods -- a pleasant flavor for one person may be too bitter or salty for another, just like a single shade of yellow could be seen as pretty or putrid by different people.
"We did not find strong evidence that the effect of work stress on heart disease is worse for those in lower grades - the effect of stress was pretty much the same across different grades, " said Dr Chandola.
But exhibitors at McCormick Place still have to deal with five different unions and pay pretty stiff wages.
"He knows pretty well all the believers on different continents, " he adds.
Being able to prove the effectiveness of the different things we do is pretty critical.
He had this business idea about a gym with different soccer fields that was pretty bad.
I'm pretty sure the rules are (unfairly) different for men than for women, but, regardless, it's going to happen.
"There are a lot of different theories of how to reduce the musculo-skeletal problem - this is a different take on it that looks pretty promising, " Prof Newman said.
You know, pedal steel is a pretty amazing instrument and can make all sorts of different noises.
Although the rivals in this new field are pretty much on the same technological track, their strategies are different.
But it makes it pretty hard to have a level playing field when two very different sets of criteria are used to judge men and women when it comes to humor, even if those criteria are largely subconscious.
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Pretty soon everybody will have self-directed accounts, perhaps 11 different kinds of them.
The size of the Welsh civil service has been reduced substantially, largely through natural wastage - it seems from outside at least, the process has been handled pretty adeptly though doubtless from the inside, the view may be different.
It's pretty much the same routine, over and over, year after year, with different jokes and haircuts.
But what made Wall Street different was they were gunslingers who could speculate and do what they wanted pretty much on their own.
In their different ways, the essays in these collections manage to pinch their subjects pretty hard, though at their best they leave them alive and kicking in the reader's mind.
This, along with a pretty impressive spread of weapons, allows for a great deal of customization as well as different load-outs for each battle.
Microsoft is pretty used to executive emails being compelled to be public through legal actions, but this is different from that.
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That we need to have different banking regulation from what we have had is, I think, agreed by pretty much everyone.
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People in very different situations -- in some states we have -- Maryland has done a pretty good job of funding education.
While the Internet looks pretty smooth, the storage, computer and telecommunication standards on which things operate are almost as different as a canal is from a superhighway.
Granted, if two nonprofits in the same field show radically different results according to criteria that you trust and value, you'd be pretty foolish to ignore the message.
Your phone will have access to all of these different offers and will present them to you only when advertisers think they have a pretty good shot at getting your attention.
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