Debate: Is global warming an issue?
Side: Yes

You are misinterpreting your sources.I'll quote them directly.From http://butane.chem.uiuc.edu/pshapley/Environmental/L13/2.html: "The Earth absorbs solar energy and most of this energy is later released as heat, or IR radiation. Most of the gas molecules in the atmosphere are not able to absorb this energy and it passes through and out into space.""Carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and certain other gases absorb IR radiation from the Earth's surface and re-emit it in all directions. These gases act like the glass in a greenhouse to increase the temperature of the planet.""An electromagnetic field interacts with a molecular bond by affecting the dipole moment of that bond.""Stretching the bond increases the dipole moment of the bond while compressing the bond decreases the dipole moment of the bond.""When this stretching and compressing occurs at the frequency of the molecule's natural rate of vibration, energy is absorbed.""A bond must have a dipole moment in order to interact with the electromagnetic field of infrared spectroscopy and that dipole moment must be changed by the vibration of the bond in order for the bond to be IR-active."From https://www.acs.org/content/acs/en/climatescience/greenhousegases/properties.html: "In order for molecular vibrations to absorb IR energy, the vibrational motions must change the dipole moment of the molecule.""strong absorption by CO2 at the long wavelength end of this region narrows this window a bit and adds to the warming effect.""Other gases that absorb in this window region or in other narrower window regions of the thermal IR (where water vapor and CO2 do not absorb appreciably) can make significant relative contributions to atmospheric warming by absorbing energy that would otherwise be lost to space."From http://www.nku.edu/~hicks/CHE%20120/The%20Greenhouse%20Effect%20alpha.htm: "The earth can absorb light in the UV-visible range, but the heated earth emits light in the IR (infrared) range, the spectral region where molecular vibrational changes are observed. Some molecules in the atmosphere can increase their vibrational energy by absorbing some of this infrared light, and thus increasing the temperature of the atmosphere.""A molecule can absorb a photon of IR light and increase the vibrational energy of one of its vibrational modes. However, not all vibrational modes can increase in energy by absorbing a photon in the IR region. For a molecular vibrational mode to be IR active, the dipole moment of the molecule must change during the vibrational mode.""Oxygen and nitrogen are diatomic molecules with one vibrational mode, involving a stretching and compression of the bond length. However, the dipole moment remains zero during the vibration, so the molecules will not absorb in the infrared.""Water has three normal modes of vibration, all of which are IR active. Carbon dioxide, a linear molecule, has 4 normal modes of vibration. Even though it does not have a permanent dipole moment, the dipole moment changes during 3 of the 4 modes, so carbon dioxide can absorb in the IR."From http://www.academia.edu/8717003/Thegreenhouseeffectandglobal_warming-REVIEW:"Advanced theory shows that a molecule will absorb IR radiation if the vibration causes a change in its dipole moment. Oxygen, O=O, vibrates as a stretching and compression of the bond. Oxygen does not absorb IR radiation as the molecule is symmetrical and does not have a dipole moment – so there can be no change in dipole moment on vibration."From http://academics.wellesley.edu/Chemistry/Chem105manual/Chem105manualSummer07/Lab06/lab06.html: "Changes in the vibrational and rotational motions of polyatomic molecules are the main results of the absorption of heat by gases. The direct absorption of infrared radiation occurs only if there is a change in the dipole moment of the molecule.""Changing dipole moments for any of these vibrational modes result in that mode absorbing infrared radiation.""Consider the dipole moment as the molecule undergoes each of these motions. Does it change? If so, the vibration will result in an absorption in the infrared region."From http://orgchem.colorado.edu/Spectroscopy/irtutor/IRtheory.pdf: "The symmetrical stretch of CO2 is inactive in the IR because this vibration produces no change in the dipole moment of the molecule. In order to be IR active, a vibration must cause a change in the dipole moment of the molecule.""Only two IR bands (2350 and 666 cm–1) are seen for carbon dioxide, instead of four corresponding to the four fundamental vibrations. Carbon dioxide is an example of why one does not always see as many bands as implied by our simple calculation. In the case of CO2, two bands are degenerate, and one vibration does not cause a change in dipole moment."----------------------------------------------- Maybe you should provide a source that says what you are trying to say.