| Scientists in the 19th century have figured out that | | | | been convinced by the evidence, which became hotly |
| gases in the atmosphere can cause "greenhouse | | | | debated among scientists of his day - that for |
| effect". These scientists became interested mainly | | | | thousands of years ago, colossal layers of ice had |
| interested in the possibility that a lower level of | | | | covered the northern Europe. These have proven |
| carbon dioxide gas may explain the ice ages of the | | | | that climate change has been affected by the |
| distant past as at the twist of the century, Svante | | | | alteration of the composition of the Earth's |
| Arrhenius has calculated that emissions from human | | | | atmosphere. |
| industry can bring a global warming in the future. | | | | From the work of Joseph Fourier in the 1820s, |
| Nonetheless, other scientists dismissed his idea as | | | | scientists understood that gases in the atmosphere |
| faulty and in 1938, G.S. Calendar argued that the | | | | might trap the heat received from the Sun. This |
| historic carbon dioxide levels were climbing and raising | | | | phenomenon is better known as "greenhouse |
| global temperature, but then most scientists found | | | | effect", which is more defined by the historic carbon |
| his arguments unbelievable then it was almost by | | | | dioxide levels. The equations and data available to |
| chance that a few researchers in the 1950s | | | | 19th-century scientists used to be far too poor to |
| discovered that global warming was really possible. | | | | allow an accurate calculation. Nonetheless, the physics |
| In the early 1960s, C.D. Keeling determined that the | | | | was straightforward enough to show that a bare |
| level of carbon dioxide in the atmosphere was rising | | | | rock at the Earth's distance from the Sun needs to |
| fast. From then, researchers began to take an | | | | be far colder than the Earth. |
| interest about the changes on carbon dioxide levels, | | | | Historic carbon dioxide levels can effectively |
| and how these were influenced by chemical and | | | | determine any gas that could trap heat rays. In 1859, |
| biological forces. Gas plays a crucial role in climate | | | | Tyndall's laboratory work identified the different |
| change, so that the rising level could gravely affect | | | | gases that did such. In some disputes, the increase in |
| our future; hence, it is just important to take into | | | | carbon dioxide has minimal effects on global warming |
| account the historic carbon dioxide levels in different | | | | but to think about it, when there is excessive supply |
| locations. Like many Victorian natural philosophers, | | | | of carbon dioxide, and there are just few plants that |
| John Tyndall was fascinated by many questions as | | | | will use such for photosynthesis, greenhouse effect |
| while he was preparing an important treatise on | | | | has been evidently brought by high levels of CO2 in |
| "Heat as a Mode of Motion", he took time to | | | | the atmosphere. |
| consider geology. Familiar with glaciers, Tyndall had | | | | |