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Education users Professors, students and teachers are free to use it in classroom presentations and demos, dissertations and other non-commercial academic works, researches and all related not-for-profit activities. The use of our files is still bound by a license but its use is completely free as long as:   (1) the downloaded image is used according to its terms and conditions; (2) humanline.com is accredited as the source by a credit line or an active link to our website; and (3) it is not distributed to third parties. via http://www.freetech4teachers.com/2012/04/humanline-thousands-of-historic-images.html

Pixelpipe is a media gateway that allows users to publish text and upload photos, video and audio files once through Pixelpipe and have the content distributed across over 95 social networks, photo/video sites and blogs, and other online destinations. We provide free mobile & desktop applications, liberate your media and share your life.

Here Be Dragons is a free 40 minute video introduction to critical thinking. It is suitable for general audiences and is licensed for free distribution and public display.