PBS recently launched a new site for educators called PBS Learning Media. The site requires users to sign up for a FREE account and provides a gateway to a variety of digital media tools for teaching multiple K-12 content areas. In science, PBS Learning Media connects you to professional development resources, audio, text, images, video, etc. You can search by specific science content areas, grade level, and type of media. With an account- you are also able to mark and organize your favorite tools and resources.
See the embedded YouTube video preview of PBS Learning Media below-