Though moderator Lester Holt did not ask a specific question on climate change during the first presidential debate last night, Rolling Stone said, "Trump's big debate lie on global warming" became the "most important exchange of the night."

After just 18 minutes of the debate, conversation between Hillary Clinton and Donald Trump quickly transitioned to renewable energy jobs as they discussed the economy. During that exchange, Clinton slipped in the well-known fact that Trump believes climate change is "a hoax perpetrated by the Chinese." Though he has called climate change a hoax numerous times since 2012, he still interrupted Clinton to reject that claim.

Here are 11 times Donald Trump called climate change a hoax—compiled by the Sierra Club Political Committee—despite him telling 100 million people last night that he never said it:

1. Donald Trump on climate change policy on Fox News:

2. Donald Trump's interview on the O'Reilly Factor in July:

3. Tweet from December 2013:

4. Tweet from December 2013:

5. Tweet from December 2013:

6. Tweet from January 2014:

7. Tweet from January 2014:

8. Tweet from January 2014:

9. Tweet from January 2014:

10. Tweet from January 2014:

11. Tweet from February 2014: