The video provides a good sense of the people and their work, but watching it one gets the sense that nothing exceptional is going on climate-wise. What has made me concerned about climate change is the recent rise of CO2 far beyond levels seen in the previous 400,000 years, the potential ecological consequences of the acidification of the ocean, the clear connection with human activity, and the relative rapidity with which all of this is coming to pass, making it impossible for nature to adapt in time. If we are living in times that are different from previous cycles, that needs to be made clear as a recurring theme in all of these videos. The "back to the future" line is catchy, and the cyclical nature of climate is an important building block for people's understanding, but the graphs and the text need to keep in people's minds the exceptionalism of the current rate and degree of change.