If you're just asking someone for basic feedback you can make a verbal contract by asking them a simple question like "This will have to stay between us, I hope that's okay?" if they agree to it then they've concented to a NDA, albeit not on paper, so burden of evidence would be harder. But it's less obtrusive than a big paper contract.
Well... the problem with plastics is that they arn't bio degradable, so they are just accumulating in the biosphere. They will however be weathered down into tiny particles over time, and animals will get them into their systems with yet unknown consequences (we know fumes of burned plastics are toxic but that doesn't really say anything about tiny particles in our bodies)
Anyhow, that's yet another problem we will have to deal with to not rape, or pollute as it were, the earth.
This is one waste not, want not, DIY project that caught our eye. Tiny little speaker housings made of carefully cut (and, we assumed, cleaned) eggshells, with small stands of clay. The final product apparently has "narrow" sound, but they sure look cuter than any homemade speakers we've ever seen before.
as far as I can tell, stokab arn't recieving taxa payers money what they did get instead was a loan that they seem to be dealing well without at this point. (this was from glancing over their annual report for 2007) and the company had eledgedly about 1 million sek worth of assets which pans out to about 3 sek per person living in that area.
and they seem to be growing their own capital like any other successfull company. and for the city the loan is a good investment in the future. so no, it doesn't have loads of hidden costs.
And no of course we don't have all the information but we know that once in the planets history due to carbon emissions into the atmosphere from volcanoes, the planet overheated.
And we know that burning fosilized fuels releases geologically sealed carbon back into the atmosphere once again which it hasn't been a part of for millions of years thus increasing the levels of CO2 beyond what the planets natural balance had previously been.
There is also a general concensuss that the greenhouse effect is happening and that the changing chemical composition of the atmosphere leads to a warmer climate on the sruface of the planet.
If we have not enough information about the earth's atmosphere we certainly have less about mars', there's a number of things that could cause the ice caps on mars to melt, a change of axis for one.
His evidence, if I recall correctly, is as follows:
If there is a personal god, who can interfere with life, toughts etc directly, who created the universe, created the laws of physics etc, then the creation or apearance of this entity which must be more complex than the universe, because he created it, is more unlikely than the apearance of the universe on it's own without any divine creator.