We were really excited about the Biodome, which boasts four different climates and all types of animals that live in those climates. We arrived to a VERY crowded site, where we paid to park in a dimly-lit garage and had a fun time trying to find the actual entrance to the biodome. Please do not confuse the BioDOME with the BioSPHERE. The Biosphere is a large clear sphere that was built to impress (reminds me of Epcot), and it is now devoted to the power of water, especially the Hudson River. It is on an island, so it's VERY far away from the BioDOME, where you will most likely want to go.
The student admission (including college) was $7, and we entered to find bunches of children everywhere. The whole experience was kind of like a 'Where's Waldo?' book. I don't know about you, but Waldo always frustrated me. There were animals in each separate climate, but you had to search for them among the grass, trees, water, etc. Pictures were allowed, but flash was not, so my pictures did not turn out well (sorry). We did see some beautiful animals - but the Biodome probably doesn't have any more animals than your local zoo does. And you only experience a couple of the climates. The arctic climate is safely boxed in, so visitors do not experience the cold (we were actually looking forward to experiencing it!). And they had penguins but no polar bears, which was also disappointing. Some features were fun, like all of the windows where you could see animals above and below the water line.
Overall, the Biodome brought out the kid in me, but left me a bit disappointed. I can imagine it would be PACKED with people in the summer, since it was crowded in mid-November.