Global warming and cooling are natural cycles. Every planet in our solar system is heating up, not just this one. We are not responsible in any significant way. However, it is true that we could manage our consumption more effectively and treat the environment with a little more respect.
I believe the warming and cooling trends are partially down to the way the Earth rotates the sun, it's not always the same distance away due to it's wobble. Also, more significantly is the sun itself. Solar activity dictates everything in our system.
Years from now when the cycle reverses and we're all being blamed and taxed for global cooling you will realise the truth.
I think there is a good chance this is what really killed off the dinosaurs.
Science reckons there have been 5 extinction level events over the course of Earths history. People tend to think of comets or asteroids, personally I believe the planets trajectory will eventually take us too close or too far away from the sun, there it will stay for a long time.
Life would survive in the form of bacteria, or the mighty cockroach. As for humanity, unless you could survive underground for a century or two then it's curtains.
Yeah, they are natural cycles, but we are speeding them up by pumping out a lot of CO2 into the atmosphere.
It's not always the same distance, yes, but it's not significant enough to have that warming and cooling trends. The solar activity itself remains fairly constant and doesn't differ that highly.
Even if the cycles reverse, it will still be warmer than the last cooling cycle was.
If that is what killed off the dinosaurs, then what did that monstrous crater do?
Trajectory? Us flying away from the sun? It's not happening if gravity works like I think it does.
ADK
The impact probably killed everything for miles around but I doubt it completely wiped out all the species. Crocodiles are proof of this.
As for trajectory, I don't mean flying away from the Sun to any great degree, just enough to change the temperature drastically, in either direction.
Gravity is dependant on the Sun, mankind has watched the Sun since day one but it's only recently that we've gained a better understanding of it. Maybe we haven't been around long enough to see all that the Sun is capable of.
Earth is the exact distance from the Sun it needs to be to sustain life, the slightest alteration of that could affect life on this planet, totally.
I know it didn't wipe out all species because we wouldn't be here if it had. I think our orbit is constant if gravity works the way it always has unless some outside force pushed us out. Yeah, but what would cause that altercation?
ADK
ADK,
Here's a link I think you'll find that corroborates much of what I've suggested. It's pretty devastating to the whole Glbal Warming argument. Please know I'm not trying to play "Gotcha" or anything like that. You've been more than a good sport for engaging me in the discussion. However, this is a fascinating article and should at the very least quell the "settled science" aspect of those that insist it is settled.
http://www.dailymail.co.uk/sciencetech/article-1242011/DAVID-ROSE-The-mini-ice-age-starts-here.html
Be well,
PT