negative energy....

I've registered for a 4-week course untitled "touching the unseen" and tonight was the second week, when we talked about meditation. We shared our personal practice and as the talking stick went around the circle i became very aware of a fact: a few people around the circle have a positive thought while meditating or call in positive energy, or say a positive mantra... and release negative energy...

I can't help thinking - where does all these negative energies go to? surely it can't be safe to just let it go, can it?

i asked this question and the teacher had some answer that didn't convince me, and rather the opposite. He said that we could release it to the Earth and that it would take care of it. How? The Earth is a living being and knowing how water cristals react to different emotions, words or peace of music (see Miraculous messages from water, Emoto's work), i can not believe that releasing negative energy into the cosmos is a good thing...

What I believe is that we've got to take responsibility for our negative thoughts and energy, too and transform them ourselves, one way or another before they can be released. Or else, other beings - humans or not - will end up picking up these energies they have not asked for...

Please, don't tell me i'm the only one thinking that way....