Can CodeIgniter query muiltiple disparate databases?

[eluser]johnnyForums[/eluser]
I work in an organization with many different databases. They will never be one database. I cannot convert them so it's not an option. I need to be able to hit the different databases with my query, aggregate the data, put it in one seamless page. Can CodeIgniter do that? Can someone tell me how to query multiple databases? Thank you for any help.