PBS Anywhere

Providing Support for PBS.org

It’s Okay to Be Smart

So You Want to go to Mars?

Video duration: 8:17

Can't wait to get into outer space? Well there's a bit you need to know first... Spending time in zero gravity can have some pretty extreme effects on the human body. Still scientists are already making plans for long trips to other planets, but first we have to start with a few experiments here on Earth — and it all starts with astronaut Scott Kelly spending one full year in orbit.

Episodes of It’s Okay to Be Smart123

Video thumbnail: It’s Okay to Be Smart Why Are There Still Monkeys? - 12 Days of Evolution #10

It’s Okay to Be Smart

Why Are There Still Monkeys? - 12 Days of Evolution #10

Some of the biggest evolution questions finally answered.

1:25

Why Are There Still Monkeys? - 12 Days of Evolution #10

1:25

Video thumbnail: It’s Okay to Be Smart Can Evolution Create Information? - 12 Days of Evolution #9

It’s Okay to Be Smart

Can Evolution Create Information? - 12 Days of Evolution #9

Some of the biggest evolution questions finally answered.

1:28

Can Evolution Create Information? - 12 Days of Evolution #9

1:28

Video thumbnail: It’s Okay to Be Smart Why Do Men Have Nipples? - 12 Days of Evolution #7

It’s Okay to Be Smart

Why Do Men Have Nipples? - 12 Days of Evolution #7

Some of the biggest evolution questions finally answered.

1:31

Why Do Men Have Nipples? - 12 Days of Evolution #7

1:31

Video thumbnail: It’s Okay to Be Smart Evolution Is Dumb - 12 Days of Evolution #6

It’s Okay to Be Smart

Evolution Is Dumb - 12 Days of Evolution #6

Some of the biggest evolution questions finally answered.

1:25

Evolution Is Dumb - 12 Days of Evolution #6

1:25

See all Episodes