The current warming cycle is the fifth that we know of. This is the coolest of the five we have the ability to see evidence from. We know these cycles occur due to variances in earth orbit.
The current warming cycle started over 10,000 years ago. It has warmed over 11 degrees C during this period. Since man began using fossil ful we have seen warming of over 0.5 degrees C. All but 0.2 of that warming happened before 1938.
There is some evidence that man has contributed to the current warming of the planet. This is in addition to the natural warming that has occurred. The dominating issue though is a natural cycle that started 10,000 years ago and seems to dovetail with planet alignment.
Global warming has happened before but it happened over many thousands of years. The present global warming is happening extremely fast (200 years) and is definitely being caused by human activity. We can measure the cause, the carbon dioxide in the atmosphere, and we can test to prove it comes from fossil fuels (coal, oil and natural gas).
True global warming does not decrease temperatures. So, either the model for global warming's effects is hokus-pokus, or global warming as presently claimed, does not exist. Some global warming followers will have you believe that global warming makes the weather "act crazy". If true, then it is not really global warming, is it.
Approximately 97 of climatologists believe in global warming.
Global warming in itself isn't pollution - global warming is the gradual warming of the earth. However, global warming was caused by carbon dioxide pollution in the atmosphere, but global warming in itself isn't a pollution. yes it is a pollution
Global warming is the name given to the recent (over 200 years) gradual increase in the temperature of Earth's atmosphere.
Global Warming is taking place right now.
The ozone has been depleted. This is due to global warming.
Global warming continues to occur, as evidenced by the fact our polar ice caps are melting, and of course by global temperature records.
If global cooling means the gradual cooling into an Ice Age, then that has happened in the past and it has taken thousands of years to happen. The present global warming has all happened far faster, in less than 200 years, and is threatening all life on the planet if we can't stop it. Global warming is by far the more dangerous situation.
Global warming is going right now and all of us are trying heal the Earth but right now there's nothing we can do because there's not enough people to help us heal the Earth we have to spread the word to heal Earth and never make that happened again.
global warming!!!!!!
The connection between freak weather and global warming. Freak weather has always happened by chance. However if the number of freak weather events continues to increase, it seems probable that the increase is caused by global warming.
It's rising right now
global warming
Greenhouse effect/Global warming.
It is difficult to quantify the exact percentage of the Earth that would be saved by stopping global warming completely. However, halting global warming would help protect ecosystems, reduce extreme weather events, and mitigate the threat of sea level rise, benefiting the planet as a whole.
Thicker than now