When using any image from the online resources listed, make sure you click on the site's "Rights and Clearance" or "Terms and Conditions" section to make sure you are following proper usage policies.
When using images from the databases, sometimes you may use them for educational purposes [as long as you cite them properly and give credit (i.e. in a presentation)]; but, many images are still copyrighted, so always check their usage policies, too.
What is a Podcast?
According to iTunes, podcasts are: "episodes of a program available on the Internet." Podcasts are usually available to download or stream, and can typically be subscribed to. Most podcasts are free. Podcasts make great educational tools and can enhance a student's learning experience.
Listed below are some great places to get started!