Common misconceptions about climate change:

Misconception: Climate change and the loss of the ozone layer are pretty much the same thing.
Fact: Climate change and the loss of the ozone layer are two different problems that are not very closely connected.
The largest contributor to global warming is carbon dioxide gas released when coal, oil, and natural gas are burned. CFCs, gases which cause stratospheric ozone depletion, play only a minor role in climate change. The depletion of the stratospheric ozone layer, including the ozone hole, is a serious environmental problem because it causes an increase in ultraviolet radiation which can harm people, animals, and plants. This is a different problem from the problem of climate change.

Misconception: Aerosol spray cans are a major contributor to climate change.
Fact: Using aerosol spray cans has almost no effect on climate change.

In the past, aerosol spray cans contained CFCs which contributed to the depletion of the ozone layer (not the same as global warming). Under U.S. law, aerosol spray cans no longer contain CFCs.
Misconception: General pollution and toxic chemicals are major contributors to climate change.
Fact: Most forms of pollution play little or no role in climate change. The invisible carbon dioxide released when coal, oil, and gas are burned is the single most important contributor to climate change.
The burning of fossil fuels, such as coal and oil, to produce energy for electricity, heat and transportation is the primary source of carbon dioxide, which is the most important contributor to global warming. Carbon dioxide does not contribute to general air pollution.

Misconception: The space program is a major contributor to climate change because it punches holes in the atmosphere.
Fact: The space program has almost no effect on climate change. The local changes rockets make in the atmosphere soon disappear.

Gases released by rocket exhaust have no real impact on global warming. They have only a small, largely short-term, local effect on the different problem of stratospheric ozone depletion.

Misconception: Using nuclear power causes climate change.
Fact: Nuclear power does not contribute to climate change. If nuclear power is used instead of coal or oil, it will reduce emissions of carbon dioxide. "Renewable energy" sources, such as solar power, can also reduce carbon dioxide emissions.

While nuclear power plants present a variety of other environmental problems, they do not emit gases which contribute to global warming.