Because people are polluting the earth. which causes it,
Yes, it certainly is happening.
global warming!
Scientists would be relieved if they had not been able to prove that global warming is happening. They could move on and investigate more fruitful areas of science, feeling that at least this is one problem they do not have to worry about. It is because scientists have proven that global warming is happening that they are concerned.
The Global Warming is happening too fast, but the ecosystems are trying anyway.
Every scientist agrees that local warming is happening. The vast majority of them (97%) agree that it is being caused by the human activities of deforestation and the burning of fossil fuels.
Global warming, most likely
It is rising slowly because of "global warming".
Global warming
Global warming theory is a lie and cars are not destroying the environment. <<>> Global warming is happening and the oil companies spend a lot of money on TV commercials to claim it isn't happening.
There are people who don't believe global warming is happening.There are people who believe it is happening but don't believe that humans are causing it.There are people who believe all the climate scientists who believe it is happening and that we are causing it.
Yes. In a 2014 study by Yale University the researchers asked:Do you think global warming is happening?63% said yes19% said no18% said they didn't know.See the link below.
There have been heat waves in the past, before global warming took hold. However, the present warming of the earth means that more and more are happening. New record high temperatures are now happening almost every year. No low temperature records are being broken.