Economic consequences

An expected result of the global warming would include droughts, floods, rise in sea level, crop failure, storms as well as ecosystem disruptions and threats to human health.

Most of the effects will have a huge negative impact on global economy, costing as much as 20% of the total economic output.
A good example would be the more frequent and severe hurricanes, which caused in the last couple of years billions of dollars in damage. In addition to this, only floods and droughts could displace 200 million people from all over the worlds by 2050.