death per year is reported for the Canadian Alpine Club in ice climbing \[[@B60-ijerph-16-03920]\]. For the Austrian Alps, figures are available between 1997 and 2017, where on average 20 deaths during rock climbing (alpine climbing and outdoor sport climbing) and one death during ice climbing per year occurred. Out of all deaths in the Austrian Alps, 6.6% occurred during rock and ice climbing. The trend seems to decline with a 5 year average of 21 deaths between 1997 and 2001 and 16 deaths between 2013 and 2017. \[[@B13-ijerph-16-03920],[@B15-ijerph-16-03920]\] As an approximation to the individuals exposed, in the period of 2005 to 2016, the number of members of the Austrian Alpine Club increased from 317,000 to 521,000 \[[@B66-ijerph-16-03920]\]. Burtscher and colleagues estimated a mortality rate in rock and icelearning is a new startup with backing from the founders of Groupon. Similarly, Khan Academy now offers over 4,000 micro-lectures served through YouTube. Then, there's Coursera, a competing software platform, with millions of enrolled students from around the world. Recently, MIT announced that their open courseware platform (OCW) will be available to students and instructors at no cost.

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