They say earth is getting warmer. Won't it cool down again when we use less fuel because the temperature rises
352873
The Earth's temperature is due to more factors than fuel use. Ozone (O3) can be broken down, leading to weakness in the atmospheric layer of the Earth. Also, certain types of smog and smoke can create a barrier between the Sun and the Earth, trapping heat in the Earth atmosphere where it should radiate into the rest of the solar system. So, if the theory is true, using less fuel helps, but does not solve the problem.
1107357
Global warming caused by humans is a myth.  It has been debunked by scientist after scientist.  The reason the earth is in a "warming cycle" (the temp on earth has risen 1 degree in the last 100 years..1 DEGREE) is because the sun is hotter.  \n\nThe environment is the new "religion" of the left, both in America and abroad. They don't believe in God and hate America.
99768
Sort of!  As the sun slowly runs out of (mostly hydrogen) fuel, it will expand into a red giant and it's radius will be greater than the current position of the Earth.  However, the Earth's orbit is currently projected to move farther out while this happens so our planet will not actually be engulfed by the sun.  It will, however, experience a very large temperature increase.
76539
You are absolutely right. It is a cycle.  We last had global cooling around 1650AD.  Did you know that water vapor has more of an effect on global warming than CO2?  In fact 2/3 of the increase in CO2 levels occurred way before we even started burning the fossil fuels!!\n   The good man above me is right that ice ages occur more often than 2 million years. In fact the last "little ice age" occurred around the Maunder minimum which forced the Vikings off of Greenland.  He is right about the sun spot activity too.\n   Wow this is very encouraging that other people have the true facts and aren't being fooled.\n   Did you know that about 99% of the weathermen think like we do?  Only problem is you have to go with the flow to get any funding these days.
940416
C for sure.\nMy but didn't this question get some folks hot and bothered. \nMay I point out that yes the plants are using the co2. Meanwhile, we silly homo saps are, while busily pumping hydrocarbons and co2 into the atmosphere, blithely burning down, chopping down and otherwise doing away with rain forests in South America. We are also draining swamps in Florida and filling them in to build houses, hacking down forests in Africa and other countries for the same reason.  All that means less of those nice green plants to absorb all that CO2.\nNow it is possible that we are just in a between glaciation warm spell. But even if we are, there is still the possibility of pushing that warm up over the edge into something we might not be able to survive.
688110
If you can call a 1 degree change in 100 years significant, go ahead. The truth is nobody knows why or what is causing warming. The earth has heated up and cooled down many times. No matter, its just good policy to take care of the environment we live in without being extremists or gloom and doom profits.
1009255
well, scientists and meteorologists theorise that because of global warming, the ocean's waters are getting warmer and causing more hurricanes and tropical storms to spawn. also, the earth is the warmest it's been in over 2000 years. all you need to know, WE BEAT THE RECORD! :P
360485
They are liquefying. Because the temperature of the planet is getting warmer...it is pollution and connected effects that are working on that side.\n\nIt is too simple and not really exhaustive as explanation but I think it is the basic concept...
166369
Our earth is warming due to the excessive use of fossile fuels and the thinning of the ozone layer that surrounds the earth. As the ozone layer thins, more UV rays can come in, the temperatures are warmer and this caused the melting of the polar ice caps. As they melt, that changes the temperature in the water currents and raises the water level. Because everything interacts in life, it can eventually change the surface of the earth, cause certain species to become extinct because their habitat changes, and will raise the temperature over the earth. This is not something that will happen overnight, but because it's been happening for years and is getting worse, it's a serious concern with scientists. Unfortunately, it's not much of a concern for our oil loving president and his administration.
736647
Well the sun is getting hotter and will continue to do so until most of  the hydrogen is converted to helium it will then expand to become a red giant. \n\nHowever the effects of this will be minute compared to processes on the earth, IE its tilt, orbit, and mankind's carbon emissions and of cause the deforestation. It must be remembered that we are in an interglacial period and the earth has been a lot warmer than it currently is. The problem is that the increase in temperature is the largest in thousands of years. BUT, when the last ice age finished the temperature rise in approx 50 years was much higher than our rise in 200 years so it is all relative.\n\nThe "freak" weather conditions on other planets may well be perfectly normal for them, remember at best we have only had probes in regular orbits around the other planets for at best 20 years with the resolution capacity to take images that show them.\n\nThe biggest problem is that although in UK we have large taxes on fuel much bigger than any proposed tax by most over governments, there is no unified effort to get us off fossil fuels, if there was someway of getting me out of my 1.2 litre small car than fine, But whats the point when someone in an other country with a 4 litre car still pays less than me to go the same distance?
395082
Because only 30 years ago, the same scientists were talking about the new ice age that was coming.\n\nAnd, historically, the Earth goes through hot and cold cycles. Greenland was once green. Ohio was once covered in glaciers.\n\nAnd right now, the sun is going through a cycle of increased activity. Mars is getting warmer, too. They don't have SUVs there.\n\nAs for whether there is any significant human activity contribution to the current increase in temperature, there is no data that suggests this.\n\nBut are you willing to cause civilization to collapse because of an unsubstantiated enviro-wanker scare tactic? The staggering cost of putting something like Kyoto into effect would cause a severe world depression worse than the Great Depression.\n\nDon't beleive the hype - someone is feeding you a load of bull.
566231
It is mainly from residual heat from when the earth first formed & the breakdown of radioactive elements w/in the earth. Pressure from the overlying material can also create heat.\n\nThe earth is actually cooling but it will take a very long time for it to "completely" cool.
737950
The sun is very gradually getting hotter. In about 5.6 billion years, most of the oceans will have boiled and most life on Earth will be gone.\n\nIn about 12.233 billion years, the sun will start to run out of fuel and become a red giant star. It will expand until the outer surface is somewhere between the present location of Earth and Mars. All life on Earth will end.\n\nThis will be because there is no more hydrogen left to make into helium in the core of the sun. When this happens, the sun will start to collapse (not enough force from core pushing out) until it starts fusing helium! This will result in a very dense and unimaginably hot core that produces so much energy that it pushes the outer layers of the sun out to where Earth is now.\n\nIn 12.365 billion years it will run out of helium too and blow its outer layers off entirely when it starts fusing heavier elements. The end result will be a white dwarf (large ball of slowly cooling fusion waste) and a very pretty, very large bubble of glowing gas that will look something like this:\n\nhttp://www.edwinhubble.com/hubble_gallery/planetary_nebula_IC_418.htm\n\nFor the complete past, present and future of our sun, click here:\nhttp://www-astronomy.mps.ohio-state.edu/~pogge/Lectures/vistas97.html
17237
Global temperature has gone through many changes, some of which were natural cycles grounded in astronomy (solar activities, changes in earth's orbit), others of which have been natural catastrophes like meteoric strikes or huge volcanic eruptions. \n\nThe rapid consumption of fossile fuels and the production of other greenhouse gases doubtlessly has influenced the average temperature and increased the rise of it. Whether it is the sole determining factor cannot be said, because all observations can only be made overlaid with all the natural factors.\n\nFor this reason, experts still debate...
36257
Because it traps the heat from the sun and earth from escaping back into space, thereby making the planet warmer.  It's called the greenhouse affect.  That also causes more clouds and rain and blocking the suns heat making it cooler.....\n\nThere is still much debate as to how much is really caused by us, and how much is natural no matter what.  Our Earth has been everything from a molten planet to a glacier planet in it's 5 billion years, and we have only been recording temperature for about 150 years.  \n\nNobody can say anything for sure, too many variables, all we do know is it has been getting a little warmer the last few decades.  Anyone who says they know for sure why is not being honest with you or themselves.  It's a political issue now, and you know what that means, lies, lies lies.
977025
Lord Kelvin back in the 19th Century showed that the Earth would have radiated all its original heat from formation long ago.  He therefore concluded that there must be nuclear processes occurring in the core which keep Earth's interior warm (who said nuclear energy was bad).  When these processes stop, the Earth will cool down.  I don't know (who does) but I expect that this will happen long before our sun's fuel is spent, although there's no need to worry - it won't be any time soon.\n\nIncidentally, it is extraordinary to think that we actually know remarkably little about the processes occurring in the core of the Earth and we have scarcely even scratched the surface in our exploration of our own planet.  We actually know far more about what happens in the core of the sun!
600459
Global warming is the opposite of global cooling.  The Earth has gone through at least 3 episodes of cooling/warming.  Where I am sitting now was once under about 1000 feet of ice.  The Earth warmed up enough to melt all that ice -- and this was way before there were any cars or industry (or even people).  Global warming is NOT caused by people living their lives and producing things. People may have an effect on the rate, but we are not the CAUSE. BTW, the ozone layer hole, which expands and contracts, has no direct effect on global cooling/warming.