We’re moving into uncertain times, and your dad and I worry. A lot. But you’re keeping us going. You’re pushing us to make better choices and not give up.

The beauty and majesty of the world of your childhood is as remarkable as the beauty and majesty of mine, but the fragility of your childhood world is so much greater.

I want you to continue to enjoy bright, beautiful, blue skies, gigantic shady trees, chirping birds, scampering squirrels, sparkling creeks and all that this amazing world has to offer!

Make the most of every day because remember yesterday is history, tomorrow is a mystery, but today is a gift.

Last week I took you to protest the Dakota Access Pipeline.

I’m going to start a campaign to try to convince everybody in the Netherlands to not eat meat one day a week.

We had a lot in common obviously, and our concern for the planet we live on was one of the many things we bonded over.

I am working with 350.org on shutting down the coal and unconventional gas industries in our country because I cannot think of a more direct way to protect you, the food, water and biodiversity we all love and rely on.

In order for you two be happy and healthy, we all need to work hard to prevent climate change.

I know I need to write this to you, and I don’t want to because it makes me so sad. I have been desperately avoiding my feelings about climate change, for many years, but especially and with greater intensity every year since you were born.

If we don’t stop cutting down trees for agriculture and to build houses then the future generations will not think about trees when they hear the word Earth.