Continental Airlines pledges to donate $2 for tropical forest protection each time a customer uses its Android or iPhone apps to obtain mobile boarding passes as part of the airline's Earth Day message.
And, for travelers who prefer not to dabble in downloadable apps, the merged United Airlines and Continental Airlines will donate $1 to Conservation International's Protect an Acre project for travelers who board jets after scanning mobile boarding passes.
United Continental Holdings is capping the total mobile boarding pass donationat $50,000, and also is sponsoring the Earth Day celebration today in headquarters-city Chicago.
Meanwhile, United Continental Holdings detailed some of the prime facets of its new Eco-Skies program, including improving the fuel efficiency of its aircraft and vehicles; using alternative fuels; better-managing wastes generated by its operations; and promoting accountability with customers, airports, partners, suppliers, governments and nongovernmental organizations.
Travelocity, too, chose to get in on the Earth Day festivities, but via social media.
The Roaming Gnome posted a Facebook status update informing friends that "over on Twitter," anyone who tweets the Earth Day-oriented stuff they are doing today would be entered into a drawing for two Virgin America roundtrip flights as well as a two-night Kimpton stay in the U.S.
To be eligible for the Travelocity drawing, you need to be following the Roaming Gnome on Twitter and your tweet needs to include #greengnome.
And, JetBlue's homepage got into the green act, as well, offering customers the chance to win a a Honda CR-Z sport hybrid or an Amana appliance makeover.
The official rules for JetBlue's One Thing That's Green Sweepstakes can be found here.
Innumerable other travel and tourism companies were marking Earth Day today, as well.
In the spirit of the day, please don't print this article:)