HU Donations, support, Membership
There sure is Darren!
Just go to the store
, link on left, and become a Contributing or Gold Member! You'll get extra privileges on the HUBB too, like more pm's in your HU mailbox, 10mb of picture uploads, custom avatars, bigger profile pics, rate threads, and more. Details on the store page here
to become a member, or here to just contribute
There is a link to Riders for Health on the links page, again on the left menu under links. A couple of riders at least also have link in their links page listing Riders for Health as a charity they are supporting on their ride.
As for "Air Ambulance" you'll have to tell me more! A quick google search turns up a ton.
Thanks for asking - and your support!
Seek, and ye shall find.
Inspiring, Informing and Connecting travellers since 1997!