I promised to add some information as I stumbled through searching on BBC Mundo during my presentation Prompts with Power. As it turns out, I was thinking of the Radio ONU website–theirs is easily searchable and programs are scripted.
To search BBC Mundo for print sources, go to Google, and on the right, click ‘advanced search.’ On the part that says “only search this site,” type bbcmundo.com. Then type your term in the top and click ‘search.’
For video and audio, on the bbcmundo.com site, type your search term in Spanish at the top. I typed “ambiente” as mine. Hit enter. On the right you’ll see the first 3 video/audio results. Click “more audio/video results” and look through to see what you want. On the 2nd page of my results there was one about the chestnuts in the Amazon, a nice idea to include.