This started in the eighteenth century with the beginning of the Industrial Age, although at first the changes were so slight that scientists were unaware of them.
Around the beginning of the twentieth century, Svante Arrhenius calculated that emissions from human industry might someday bring a global warming, but other scientists dismissed his idea as faulty. In 1938, G.S. Callendar stated that the level of carbon dioxide was climbing and raising global temperature, but most scientists found his conclusions implausible - scientists tend to have a bias against novel theories until the evidence is undeniable. It was only in the early 1960s, when C.D. Keeling measured the level of carbon dioxide in the atmosphere and found that it was rising fast that researchers began to take an interest. We now know that average global temperatures are indeed rising, and that global warming is associated with the increased levels of carbon dioxide produced by human activity.
1000 years ago there was no global warming, just the normal warming of the earth by the sun. Global warming started when we discovered fossil fuels and started burning them seriously, at the beginning of the Industrial Revolution, about 250 years ago. This burning released age-old carbon dioxide that had been hidden underground for 300 million years. Carbon dioxide is a greenhouse gas, so extra gas in the atmosphere captures more heat, and this is global warming.
No, chlorine has no effect on Global Warming.
No, global warming began when humans seriously started burning fossil fuels in the Industrial Revolution, adding additional greenhouse gas (carbon dioxide) to the atmosphere.
They don't help with global warming naturally but the large buildup of greenhouse gases does assist with global warming.
Global warming skeptics do not believe the geoscientists, engineers and meteorologists round the world. The skeptic individuals believe that nature is the primary cause of global warming and/or that future global warming will not be a very serious problem.
It has started already. The earth is gradually warming.
The ozone has been depleted. This is due to global warming.
Global Warming
they started to become endangered when global warming had started to increase
We know now that global warming started in the Industrial Revolution, more than 200 years ago, when we discovered and started to burn fossil fuels, which released carbon dioxide (CO2). This is one of the greenhouse gases that are causing global warming.
The planet and everbody in it. Pollution is how global warming was started
No, global warming probably started in Britain with the invention of the steam engine and the start of the Industrial Revolution. The discovery that coal was readily available underground and that it burned so easily was the trigger for global warming.
global warming!!!!!!
Humans did not start global warming. It is a natural phenomena. However our societies are certainly accelerating it. The extent of that acceleration is hotly debated and a cause for considerable controversy.
Global epidemic, the sun exploding, collosion with a black hole, global warming, global cooling, nuclear war, eruption of a super volcano, or a collision with a large enough meteorite or comet.
1000 years ago there was no global warming, just the normal warming of the earth by the sun. Global warming started when we discovered fossil fuels and started burning them seriously, at the beginning of the Industrial Revolution, about 250 years ago. This burning released age-old carbon dioxide that had been hidden underground for 300 million years. Carbon dioxide is a greenhouse gas, so extra gas in the atmosphere captures more heat, and this is global warming.
There is no such thing as "a global warming" global warming only happens to earth because human and our unruly decrease in the earths resources. HUMANS cause global warming.