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 Smart151

Video thumbnail: It’s Okay to Be Smart Why Salt & Pepper?

It’s Okay to Be Smart

Why Salt & Pepper?

Join the #AnythingButPepper movement!

5:23

Why Salt & Pepper?

5:23

Video thumbnail: It’s Okay to Be Smart Why Don't Other Animals Wear Glasses?

It’s Okay to Be Smart

Why Don't Other Animals Wear Glasses?

Vision impairment is common in humans, so why not the rest of the animal kingdom?

5:03

Why Don't Other Animals Wear Glasses?

5:03

Video thumbnail: It’s Okay to Be Smart Should You Be Worried About Zika?

It’s Okay to Be Smart

Should You Be Worried About Zika?

Mosquitos have been dangerous for, well... forever. So what's new about Zika?

5:45

Should You Be Worried About Zika?

5:45

See all Episodes