Through the first Sunday of this season, there were 79 nine-inning games, compared with 85 at the same stage last year. The average length of those games this year has been 2 hours, 54 minutes, 39 seconds. A year ago, the average was 3 hours, 2 minutes and 25 seconds.
Carbon dioxide is the main cause of human-induced climate change. It has been emitted in vast quantities from the burning of fossil fuels and it is a very long-lived gas, which means it continues to affect the climate system during its long residence time in the atmosphere.
There are many factors that can cause a warming of our climate; for example, more energy from the sun, large natural events such as El Nino or an increased greenhouse effect. Scientists have ruled out the sun and natural variations in our climate as the major causes of the recent warming.