The second season of the American fictional drama television series ER first aired on September 21, 1995 and concluded on May 16, 1996. The second season consists of 22 episodes.

Greene's attempts at balancing his work and family after moving to Millwaukee comes to an abbrupt end when his wife is caught cheating on him with a colleague, the divorce becomes final and he starts dating again. At work, he is promoted, becoming an attending physician. He locks horns with close friend Dr. Ross, whose reckless professional behavior is called into question by the hospital authorities, and new Chief Resident, Dr. Kerry Weaver. Ross breaks protocol to treat an HIV-positive child and is about to be fired. He has already accepted a job at another medical facility when he heroically saves a child, trapped in a sewer in the landmark episode "Hell and High Water". His heroism creates a media sensation and the hospital reconsiders its decision when Dr. Ross receives an award for outstanding community service. Later in the season, his father returns, and while attempting to bond his father again walks out on him. While tracking him down Doug becomes embroiled in a relationship with his girlfriend.

Season 2 is the second album from Indonesian rock band Andra and The BackBone, released in 2008.

A season is a subdivision of the year, marked by changes in weather, ecology, and hours of daylight. Seasons result from the yearly revolution of the Earth around the Sun and the tilt of the Earth's axis relative to the plane of revolution. In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that reaches the Earth's surface, variations of which may cause animals to go into hibernation or to migrate, and plants to be dormant.

During May, June and July, the northern hemisphere is exposed to more direct sunlight because the hemisphere faces the sun. The same is true of the southern hemisphere in November, December and January. It is the tilt of the Earth that causes the Sun to be higher in the sky during the summer months which increases the solar flux. However, due to seasonal lag, June, July and August are the hottest months in the northern hemisphere and December, January and February are the hottest months in the southern hemisphere.

In temperate and subpolar regions, generally four calendar-based seasons (with their adjectives) are recognized: spring (vernal), summer (estival), autumn (autumnal) and winter (hibernal). However, ecologists mostly use a six season model for temperate climate regions that includes pre-spring (prevernal) and late summer (serotinal) as distinct seasons along with the traditional four (See Ecological Seasons).