Just a heads up. There have been a number of reports on the news about scammers making look-alike websites for well-known charities. They are also apparently sending out emails, as my Mom just received one where a charity was going to plant a tree for every $10,000 donated - going directly to the actual charity website without clicking the email link, it's a tree per $10 donated.
Be sure the site you're on is valid, and go directly to the site. Don't trust any email click-thru.