Time is running out.
Cliimate change only refers to those variations that persist for a longer period of time, typically decades or more. In addition to the general meaning in which "climate change" may refer to any time in Earth's history, the term is commonly used to describe the current climate change now underway. In the time since the Industrial Revolution, the climate has increasingly been affected by human activities that are causing global warming and climate change.
The climate system receives nearly all of its energy from the sun. The climate system also radiates energy to outer space. The balance of incoming and outgoing energy, and the passage of the energy through the climate system, determines Earth's energy budget.
When the incoming energy is greater than the outgoing energy, Earth's energy budget is positive and the climate system is warming. If more energy goes out, the energy budget is negative and Earth experiences cooling.
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