WWF Green File Format
The WWF (World Wide Fund for Nature) has developed a commendable initiative label: the creation of a software to store and share documents in a new format. WWF files can be view only on computer screens or smartphone but can not print. In this way you can save tons and tons of wasted paper unnecessarily with the press wild and indiscriminate. Paper, of course, comes from trees that were likely to be killed for any purpose.