Sometimes you'll have to increase your skills level to obtain a job in natural resources or conservation occupations. Many colleges and universities are now offering online access to their science courses. Anyone with Internet access can advance their education and career opportunities.
If you are entering an environmental profession, then be prepared for life-long learning. Getting a degree is just the beginning. Many resources professions require regular educational updates, certifications or attendance at field seminars. Usually if your are a 'professional' you'll be joining an appropriate organization which will host annual courses in your chosen field. Whether your target is forestry, wildlife or watersheds, you'll need to continously improve your skills to stay current.
Below is a sampling of the growing number of www educational opportunities. Note that some classes are 'Open Course' meaning you are auditing the classes - no credit towards a diploma. Other courses (with fees) can lead to environmental and science degrees, diplomas, and specialist certifications like 'Arborist'.
Be sure to check your discipline's professional societies, which often have their own certification programs.