Ask HN: What's a good plant for my desk/office?

NASA actually studied the connection between plants and air quality. Many of the plants (approx. 1 plant per 100 ft^2) are fairly easy to keep alive:

Keep pets in mind. There are a surprising number of common house plants that are poisonous, but tempting treats for cats.

How much light do you get (and of that, how much is artificial vs. natural?)

How much space do you have?

How often do you want to have to water it?

Cactus ? Dont forget to water it