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Cumulative land-use change contributions to CO 2 emissions, by region. [32]: Figure SPM.2b Local vegetation cover impacts how much of the sunlight gets reflected back into space , and how much heat is lost by evaporation. For instance, the change from a dark forest to grassland makes the surface lighter, causing it to reflect more sunlight.
Renewable energy is key to limiting climate change. [284] For decades, fossil fuels have accounted for roughly 80% of the world's energy use. [ 285 ] The remaining share has been split between nuclear power and renewables (including hydropower , bioenergy , wind and solar power and geothermal energy ). [ 286 ]
Global change in a societal context encompasses social, cultural, technological, political, economic and legal change. Terms closely related to global change and society are globalization and global integration. Globalization began with long-distance trade and urbanism. The first record of long distance trading routes is in the third millennium BC.
For example, alterations to ocean processes such as thermohaline circulation play a key role in redistributing heat in the world's oceans. Ocean currents transport a lot of energy from the warm tropical regions to the colder polar regions.
The Intergovernmental Panel on Climate Change (IPCC) has organized many of the risks of climate change into five "reasons for concern." [ 1 ] [ 2 ] The reasons for concern show that these risks increase with increases in the Earth's global mean temperature (i.e., global warming ).
The world's still going to need lots of oil and gas in the meantime. Goldman Sachs ' researchers believe yearly usage of oil is going to keep growing before peaking at 110 million barrels per day ...
Some climate change effects: wildfire caused by heat and dryness, bleached coral caused by ocean acidification and heating, environmental migration caused by desertification, and coastal flooding caused by storms and sea level rise. Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall ...
The world's largest memory chip, smartphone and TV maker expects to log an operating profit of 6.5 trillion won ($4.5 billion) for the three months ended Dec. Samsung's preliminary Q4 profit falls ...