Money for Expeditions & Travel

One of the big problems with expeditions and travel is the cost.  With the recession, it has become increasingly difficult to find funding, even for extremely promising projects.
For those budding explorers and tropical/travel medicine scholars out there, I've put together this list of potential funding sources for your overseas projects.  All have different criteria, so make sure you qualify before you apply, and please note that this list is not exhaustive.  I welcome any additions to this list that you guys might have.