Re: Climate Change
 

Oh it makes perfect sense, you only have to look at elmo's roi from donnie to know that or Miriam Adelson's for that matter

Re: Climate Change
 

No idea what on earth that means . . . actually, not even bothered what it means if it's American garbage

Re: Climate Change
 

please tell me how you can work out accurately 5 billion years with about 150 years of data?

Re: Climate Change
 

Ice cores ?

Re: Climate Change
 

Among other methods - for ice cores it’s the isotopic composition of gasses trapped in tiny bubbles frozen in the ice. Another method is tree rings - although they only really work back a few thousand years, and ocean sediment cores.

Re: Climate Change
 

It seems to work in polls ok .... :D

Re: Climate Change
 

You little tinker you, I wish I'd thought of that one :D

Re: Climate Change
 

Also layers of rock sedimentation and radiometric dating. The rock literally is laid as eras pass, and geologists can tell what the atmosphere was like to form it. (We knew something happened at the time the dinosaurs went extinct via this method, long before we found the crater).

Re: Climate Change
 

The CT boundary, in rocks below that level dinosaur fossils are numerous, above it, none. The boundary itself is marked by a thin deposit layer, over-rich in iridium. So obviously something catastrophic happened on a global scale some 65-66 million years ago, the increased iridium did suggest a metiorite impact, it was many, many years later that the likely candidate for the site was uncovered in. what is now, Mexico.

60-odd million years of erosion have erased most surface features, but there is considerable evidence from the shocked state of the rocks underground.

Now before I am accused of taking the thread off course, I am pointing out that it is certainly possible to deduce what happened or what the conditions were like long before humans kept records or even existed. The Earth has warmed and cooled many times over it’s history - but never so fast as we are seeing now.

So what is causing the mean global temperature to climb so fast? What happened in the world around 150 years ago? Coincidence, oir could there be a connection?

Re: Climate Change
 

Didn't General Custer get his arse kicked about 150 years ago? ;)

Re: Climate Change
 

Re: Climate Change
 

Alexander Graham Bell patented the telephone, i bet custer wished he had one

Re: Climate Change
 

Um.... ok, and back to the subject please.

Re: Climate Change
 

Apparently, a Doldrum spacecraft crashed on Earth, causing widespread Iridium contamination, right before a Marian attack vessel destroyed the Doldrum homeworld, generating a massive asteroid which then impacted earth causing the dinosaurs to go extinct.

Or so Star Trek just told me. :D

Re: Climate Change
 

Yes I watched that documentary, its conclusions are somewhat contested thought. :)

In an earlier post I mentioned what happened on Earth some 150 years ago, Battle of the Little Big Horn and patenting of the telephone were mentioned. Realistically I should have said 200 years ago, my bad. The start of wide spread industrialisation, originating in the UK but then spreading globally.

If you deny that climate change is happening, and is real, then please have an alternative explanation for why the Earth’s mean temperature had risen so much over the past few decades. By definition that is a change in the climate.

OK some may claim that human activities are not responsible, increased solar activity etc have all been cited. Carbon Dioxide is absolutely a ‘greenhouse gas’ (ask Venus what is happening there, it’s a case of a runaway greenhouse effect), I don’t think anyone can deny the physics and chemistry here. So even if you don’t believe that the rise in temperature is entirely due to human activity surely it makes sense to at least not make the situation worse!