NSF and NASA have announced funding and research opportunities for graduate students and postdocs in a variety of STEM disciplines.
Please click on these links for more details:
For graduate students, Bridge to the Doctorate, IGERT and NSF Grad Research Fellowship programs provide generous stipend and tuition support for students through the National Science Foundation:
http://www.pathwaystoscience.org/Grad.asp
For postdoc opportunities, check out more than 250 openings nationwide:
http://www.pathwaystoscience.org/Postdocs_portal.asp
For NASA-supported internships, fellowships and scholarships, go online to: http://intern.nasa.gov/.