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.
How do we know that humans are the major cause of global warming? Photo: freeimage4life/Flickr We all know that warmingâand coolingâhas happened in the past, and long before humans were around. Many factors (called âclimate driversâ) can influence Earthâs climateâsuch as changes in the sunâs intensity and volcanic eruptions, as well as heat-trapping gases in the atmosphere.