Towards a Trillion Trees

Rare good news:

A unique worldwide tree planting initiative, aimed at empowering citizens to corporations and people up to presidents to embrace the climate change challenge, has now set its sights on planting seven billion trees.

It follows the news, also announced today, that the Billion Tree Campaign has in just 18 months catalyzed the planting of two billion trees, double its original target.

But realistically even severn billion trees won't make a huge difference given the scale of the problems they are trying to counter - deforestation, rising carbon dioxide levels etc; how about making it a round trillion...?