Halloween comes during a time of year that has highly variable weather.
What we know about hurricanes and climate change.
Through the first nine months of the year, 2015 has been the hottest on record globally.
This week marks the date of the 30-year future setting from the Back to the Future trilogy.
Global average temperatures are generally higher in El Niño years vs. La Niña years.
Summer seems to have lasted a little longer in much of the country this year.
Ten of the lowest annual Arctic sea ice volume minimums have been in the last 11 years.
Several cities in the Western U.S. had their hottest summer on record.