Surprising how many sceptics there are of something that has already been proven. Increased warming and sea levels are facts, you're arguing against thermometers and sea level monitors, not academics and politicians. The only questions are the extent that man is causing it, and the degree of future rises.
Ok, let's entertain this for a minute.
How many percent increase of either - as a world average - has there been in the last 200 years?
Don' talk 50 years, because in the scale of the age of the world, it doesn't even register on any clock.
Even 200 years is a waste of time, but as I said; let's entertain it.
As for man causing it; think about this one - part of the GW argument is the amount of CO2 being generated by humans is making the temps rise.
In actual fact, it's the other way around; the temp rises cause the rise in CO2.
Now, think about for how many hundreds of millions of years there have been massive, uncontrollable fires around the planet that without humans there to put them out would probably burn for months or maybe years on end until they ran out of fuel or the rains came..
Don't forget that were also vast areas of the planet that were previously forested that we have stripped, so the size of the fires would be more monstrous than anything we've ever seen.
Fires like Black Saturday and Ash Wednesday have been happening on a global scale for hundreds of millions of years, pumping CO2 into the atmosphere.
Why haven't they caused the temps to rise to the point of no life left?
http://www.environment.tas.gov.au/index.aspx?base=333
We just haven't been around to see them; we've only been around for about a million years if that. Again, not even a dot on the world age clock.
Sorry, the best I'll give you is there
are changes in atmospheric and environmental conditions, but as for rising temperatures and sea levels that threaten all life on earth; nope.