The record global temperature of 2015 is likely to become the norm by 2040, and possibly even earlier.
A new report shows that greenhouse gases' influence on the climate has increased 40 percent since 1990.
Flight delays and restrictions could become more common as temperatures rise due to climate change.
Rising background temperatures are conspiring to make Arctic winter warm waves more common and persistent.
A scorcher of a heat wave broke temperature records across the West and helped fuel new wildfires.
Arctic melt season has begun in earnest with sea ice at its lowest June volume on record.
A major heat wave that helped fuel deadly wildfires in Portugal was more likely because of global warming.
A landmark study shows that climate change will disproportionately affect poor counties in the South.