Why?

Because the earth warms and cools in natural cycles, slowly, over long periods of time. Nobody is refuting that.

Do you believe humans can impact the Earth and affect natural cycles?

Slightly

I don't believe we can change what's happening to any great amount.

Good point. I would say humans are slightly speeding up the natural warming of the Earth.

And as the world becomes more developed then I think that rate of warming will increase.

Not sure how I feel about greenhouse gases. However, trees and vegetation naturally reflect UV light and shade the surface of the Earth. Pavement absorbs UV and heats the surface of the Earth. As we trade more vegetation for pavement I think we’ll see that increase. What’s your take?

It’s measured and irrefutable that big cities are, on average, warmer than, say, a small rural town. Why is that?

Now imagine all land area taken up by big cities across the globe and you’re saying we can’t impact the Earth in a substantial way?

Not measurably by any normal use of resources and renewable resources to sustain human life.....the planet is here for us to use ....


Can you give us examples of intentional destruction that will permanently damage the earth's ability to sustain human life....? Leroy brown

Big cities

Vegetation gone forever = increased UV absorption and warmer temps
Interrupted water cycles — would you drink well water in Portland?
Dirty air from increased vehicle exhaust and lack of vegetation filtering air — would you breathe directly from a car exhaust?
Where do you grow food?
What animals live there?

Can you prove and give specific examples that humans can’t speed up the Earth’s natural cycles? Politics and money aren’t answers.

Nothing is forever....anything man made will return to the earth eventually.....our simple and extremely short lives are nothing

Since apparently I’m the only one answering questions, I’m going to assume you drink Portland well water.

Why would I drink portland well water .. ? My well isn't in portland



The pnw has some of the cleanest water in the us

That’s not the question. Would you drink Portland well water?

I don't know so much about man's ability to destroy nature, but we can certainly move it around, in which it is about adaptation. The years of the dust bowl is an example of maybe not causing but certainly speeding it up. Without some conservation the heartland would move down the Mississippi faster than what it is. Still it is just moving things around, but I doubt many farmers in Iowa and Illinois would like to relocate to the Delta, lol.

Nature had its own ways, such as lightning strikes to burn off the prairies for fertilization and new growth.

Then there is "do gooders" over doing their thing such as tree huggers and letting the old undergrowth pile up and add to the forest fires.

Or the animal rights not caring about what numbers an area can sustain a healthy population. Yes I believe man can make a difference, but eventually nature corrects itself.

A lot is self regulating as in animal care. If farmers neglect their animals there will be no profit and there will be a wise up period either for the better or for getting out.

one of the tricks the man-made global warming folks use is to place thermometers near the city heat islands. not every thermometer, mind you; but skewed that way, not random.

listen, I dislike cities more than most

but a quick google search tells me that approximately 0.8 percent of earth's landmass is covered by concrete and asphalt.

and about 71 percent of the earth's surface is covered by water.

so, less than 1 percent of the 29 percent of earth's surface is concrete/asphalt.

The land area is what we’re focused on, since that’s where the vegetation grows and that’s what’s keeping us alive. So one percent of 29 percent is almost 3.5% of the Earth’s land area. Maybe that number is too small to matter, maybe it’s extremely meaningful.

I didn’t ask if you liked big cities, but I’m glad you point that out. Why don’t you like them?

you better check your math...1 percent of the earth's land mass is not 3.5 percent of earth's land mass.

Lol read that wrong. Either way, you’re saying numbers don’t matter. If 100% of the land mass is concrete/asphalt then do we impact the Earth?