1 Favorite season is winter because he loves snowy landscapes and cross-country skiing.

2 Spent six weeks backpacking in northern Alaska one summer and didn't see anyone outside his group.

3 Loves exploring new places, especially new ecosystems with unique flora and fauna.

4 Enjoys endurance athletics, including running, biking and cross-country skiing.

5 Started efforts on climate change when he was 14 by writing a letter to his congressman.