People & trees & breathing

"Common people: the New Forest women following ancient tradition"| Conservation | The Guardian

https://www.theguardian.com/environment/2020/nov/22/common-people-the-new-forest-women-following-ancient-tradition-aoe

"Dr. Hans Williams elected president of Texas Forestry Association" | Online Features | thepinelog.com

http://www.thepinelog.com/online_features/article_b889fd9a-6bef-11eb-aa46-13c2688538a0.html

"The Power of One Tree - The Very Air We Breathe" | USDA

https://www.usda.gov/media/blog/2015/03/17/power-one-tree-very-air-we-breathe