Air Pollution: Fixed more issues where cities that placed air polluting buildings received large amounts of air pollution from unknown sources.
By far, the most important one to me - totally stopped playing the game because of this; otherwise I did pretty OK during launch day all the way until 2.0
Trees: Trees now last longer, but also do not eliminate as much ground pollution.
Fair enough.
Radiation: Radiation causes less ground pollution than previously.
If it meant shorter periods of high radioactivity, then I disagree. Pripyat is still uninhabitable by people until now. Otherwise, Maxis should tweak the frequency of disasters or reduce the chances of a meltdown to a more realistic level.
Transit: Streetcar stops can now be placed directly on standalone streetcar tracks, and passengers can walk along the tracks to them
Awesome. Got tired of building high density avenues where they are not needed.