What is the definitive proof that the Earth is warming due to something man has done?

Question

What is the definitive proof that the Earth is warming due to something man has done?

Answer 1

They cant prove it because its nothing to do with man. Thats why they dont call it global warming anymore.  Its now "climate change", which again is nothing to do with man, but a natural cycle which happens every 400 years or so. It isnt warming, the temperature is just moving, thats why its cooler in places which used to be warmer and vice versa.

Answer 2

I summed up the scientific evidence in the link below.

Answer 3

Atmospheric CO2 has increased by 35% since the time of industrialization, from about 280 ppm[1] to 385 ppm[2]. This increase is fully the fault of mankind.[3]

Other greenhouse gases have likewise increased due to man's activities. Anthropogenic sources of increasing concentrations of greenhouse gases include FOSSIL FUEL COMBUSTION, land use changes, and deforestation.

Two hundred years of scientific understanding[4] says that greenhouse gases trap energy/heat (in the form of infrared radiation) close to Earth's surface. Increasing concentrations of greenhouse gases increase global temperatures.

Answer 4

There is no proof.

There is proof against the "fact" that mankind is causing global warming. The Earth is coming out of an Ice Age, so we're warming up... hmm... must be humans causing it. This happens every 1500 years. Rather be warm than cold, so it's a good thing that they weren't right in the 70s, when they believed that humans were causing global cooling!

*Down with Big Brother*

Answer 5

the holes in the atmosphere , the accelerating ice melting at the poles.........

Answer 6

There is none.  The belief that man is causing "global warming" stems from religious teachings of original sin, where man is guilty just by being born.

This can be seen over and over when believers are looking man to repent for his actions of living and paying a penance in the form of taxes as a means for his salvation.

Man does not have to be made to feel guilty as we have the intelligence to reduce green house gases while increasing our lifestyle.  Nuclear reactors could power all our needs and power electric cars cheaply and green, however believers do not want new sources of power just an overall reduction of energy usage,

They won't be happy till we're back living in caves.

Answer 7

BECAUSE!!!! Manbearpig SES SO!!!!! and since hes obviously God, everything he says is right!!!

Answer 8

Regardless of whether or not humans have caused climate change, we have still caused a lot of harm to this planet. Deforestation, as an example, does a lot more than just decrease the amount of trees on the planet. It also destroys ecosystems, and takes away homes for plants and animals.

Answer 9

The key words are "definitive" and "something that MAN has done," and the fact is, there is none.

All the GW scare mongers have is nothing but theory and conjecture. If they offer it up as fact they are flat out lying!

All these computer models that the GW chicken little's swear by are nothing more than snake-oil. It is impossible to create a computer model that is remotely accurate at predicting long term future patterns where GW is concerned. There are too many factors and so many permutations required to have even 1% reliability it is impossible to create.

Fact: As best as science can determine extended rises in CO2 level have ALWAYS been preceeded by a rise in temprature. No exceptions. Reasonable assumption; Higher CO2 levels are a product of GW not a cause.

The current scare mongering about GW aka; Climate change being "man made" or "caused by man" is designed to get more government control of your life and your pocketbook nothing more, nothing less.

If the issue is pollution then they should be honest and call it that! But instead they disguise their agenda with junk science to support a bogus condition.

Answer 10

They can't prove it's something else, thus they conclude that it must be us.

That is not the same thing as being able to affirmatively rule out other causes.    They don't KNOW all the factors.   There have been similar warm periods in the past - I suppose you could argue whether all of them were warmer than today but nobody can argue that they weren't similar - when CO2 levels were lower than today and didn't rise.    We don't know the causes of all of those warm periods.   Whatever caused the warming during those periods could be a factor today.

Greenhouse gases do trap heat.    But CO2 is a weak heat-trapper and the increase has been very, very small.      About 27% relative to the CO2 level in 1800 - - but about 1/11,000th of the atmosphere.

Answer 11

There is NONE!