Tom Brady wasn’t joined by wife Gisele Bundchen at an Ellie Fund event because the supermodel was busy saving the planet in her native Brazil. Bundchen, a UN Environmental Ambassador, was filming scenes for an episode of National Geographic’s new series, “Years of Living Dangerously,’’ which debuts in the fall. Gisele’s apparently doing a piece documenting the destruction of the Amazon and the efforts to save it. (She posted a photo of herself on Instagram sitting beneath a mighty tree in the forest.) The other celebrity correspondents include David Letterman, Ian Somerhalder, America Ferrera, Don Cheadle, Arnold Schwarzenegger, and Jack Black.