Design a Logo

I need a logo designed for my environmental classifieds website. I like the idea of the Airbnb logo and the thought process behind it, [login to view URL] direction is people, products and the environment. I need to keep with the grey and green theme i have going at the moment, green as in lime green and grey as in almost charcoal, but similar to the colours on the website. the website is active at the moment but it is still undergoing construction so please familiarise yourself with what it does and develop a logo according. Essentially it connects all environmental professionals together. The brief is as follows: - Something simple - Needs to have the colours green (lime green) and grey (any tone of grey is suitable however I am open to other colours being suggested) - Needs to relate to the following criteria: - People; i.e. consultants, people that offer services, people that freelance in the environmental world - Products; environmental products such as erosion products, renewable energy products or any product that has use in an environmental context; - the environment; something simple that encapsulates the idea of the environment. I am happy for you to use your artistic licence to explore any option you wish in regards to a word mark, pictorial mark, abstract mark, letter mark or character. I will also need a simplified version with a shortened version of the name to place in profile pictures, and for letterheads etc. I also like the simplicity of the freelancer logo, so something similar would be ideal. Please contact me should you require any further information. I will require a logo that has no background i.e. just the logo and is of a suitable resolution.