The Science Teacher, NSTA's magazine, has put out a call for papers. If you're interested in writing an article addressing new science standards, there is a March 1 submission deadline. Other articles have ongoing submission deadlines. Author guidelines for The Science Teacher can be found here. Submissions should be submitted here.
Also, the Audobon Society is giving away 50 cameras (PlantCam's and BirdCam's) for classrooms. Entry requires a 500 to 750 word essay about why your classroom needs a BirdCam or Plant Cam and how you will use it to benefit your students. The deadline is January 31. Find more information here.