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It's Okay to Be Smart
Maybe We've Already Made First Contact…
Season 11
Episode 23
There are hundreds of billions of planets in our galaxy. Scientists now think hundreds of millions of them have conditions where life could arise. What do scientists think are the best ways of reaching out to them? And why do some scientists think that we shouldn't?
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15:15
We explore what we can actually do about pollution.
9:21
The biggest thing that has ever lived on Earth… is a tree? Hard to believe, but it’s true!
15:33
We travel to Great Sand Dunes National Park to climb the largest sand dunes in America.
12:05
There are parts of you that are living and dying at the same time. We find out how much.
12:27
This episode is about the science and evolutionary history of...butts.
