carl sagan

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Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.
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carl sagan climate

This 1985 video of Carl Sagan warning Congress about climate is just as sobering now

In his trademark simple and elegant style, Carl Sagan presented the causes of climate change, how we know it is happening, and what we can do about it.

How science will help us find our way to the future

How science will help us find our way to the future

The most ambitious scientific mission may be to inspire humanity to act, says the author, a co-creator of Cosmos.
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