The effects of global warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases. There is a scientific consensus that climate change is occurring, and that human activities are the primary driver.
Future effects of climate change will vary depending on climate change policies and social development. The two main policies to address climate change are reducing human greenhouse gas emissions and adapting to the impacts of climate change.
Global warming could do more than just melt polar ice. It could change our maps, and displace people from cities and tropical islands.