"<span style="color: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;">Through OCW, educators improve courses and curricula, making their schools more effective; students find additional resources to help them succeed; and independent learners enrich their lives and use the content to tackle some of our world’s most difficult challenges, including sustainable development, climate change, and cancer eradication."</span>
[http://itunes.duke.edu/ <span style="colorD][http: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;">Duke //itunes.duke.edu/ uke University</span>]
<span style="color: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;"></span><span style="color: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;">Duke courses available on iTunes U. "Learn with Duke. Any time. Anywhere."</span>
[http://www.extension.harvard.edu/open-learning-initiative <span style="colorH][http: rgb(51, 51, 51); font//www.extension.harvard.edu/open-family: arial, helvetica, sanslearning-serif;">Harvard initiative arvard Open Courses</span>]
<span style="color: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;"></span><span style="color: rgb(51, 51, 51); font-family: arial, helvetica, sans-serif;">"Videos for the following free Harvard courses are made available by the Harvard Extension School's Open Learning Initiative. Featuring Harvard faculty, the noncredit courses are open to the public. You do not need to register to view the lecture videos."</span>
[https://www.uclaextension.edu/pages/search.aspx?c=free+courses UCLA Extension]