This summer, L.L.B.N.

B. invites you to simply step outside and enjoy the fresh air and sunshine.

We'll be your guide with tips and advice to get more out of every moment outdoors.

Here's a trick to estimate how much time you have left outside before the sunset.

Stretch out your arm and hold your hand sideways, palm facing you.

Every finger between the horizon and the sun is 15 minutes of

daylight. For more fun ideas, easy how-tus and inspiring stories,

visit L.L.com slash guide.

For the new Explorer, planning a visit to a national park or even several on a big road trip can be a

daunting task. I'm Jason Epperson and today on America's national parks I'm talking with

Jennifer Milroy a national park lover who has visited nearly all of the 63 main parks and shares her tips and advice over at national park obsessed.com.

I talked with Jennifer about the broad strokes of planning a national park visit, pitfalls to avoid, and her resources for helping you get the best out of your trip.

Jennifer, welcome to the show.

Thank you. I'm happy to be here.

Let's start by talking about your journey

into the world of National Parks.

What first got you excited about National Parks

and how did you become national park obsessed?

So I actually I was six months old to my first national park.

I lived 45 minutes from Great Smoking Mountain National Park.

Yet my first National Park was Mount Renier.

My parents are Kite Flyers, so we were at a Kite Flyers convention,

...