Anti Keystone XL protesters at the White House

The speaker reflects on the historical reliance on fossil fuels, starting from the era of Woodrow Wilson to the present day under President Barack Obama. They emphasize the need to correct past mistakes by transitioning from fossil fuels to clean energy, highlighting the importance of this shift for future generations.

What does the speaker mean by 'the sins of the past'?

In what ways does the speaker suggest that reliance on fossil fuels has impacted the world?