ENVIRONMENT & CLIMATE
We Discovered Microbes in Bark ‘Eat’ Climate Gases. This Will Change the Way We Think About Trees
by Luke Jeffrey (Postdoctoral Research Fellow, Southern Cross University), Chris Greenig (Professor, Microbiology, Monash University), Damien Maher (Professor in Earth Sciences, Southern Cross University), Pok Man Leung (Research Fellow in Microbiology, Monash University), The Conversation:
“We all know trees are climate heroes. They pull carbon dioxide out of the air, release the oxygen we breathe, and help combat climate change. Now, for the first time, our research has uncovered the hidden world of the tiny organisms living in the bark of trees. We discovered they are quietly helping to purify the air we breathe and remove greenhouse gases.
These microbes ‘eat’, or use, gases like methane and carbon monoxide for energy and survival. Most significantly, they also remove hydrogen, which has a role in super-charging climate change.
What we discovered has changed how we think about trees. Bark was long assumed to be largely biologically inert in relation to climate. But our findings show it hosts active microbial communities that influence key atmospheric gases. This means trees affect the climate in more ways than we previously realized.”
Within every tree species examined, in every forest type and at every stem height, bark microbes consistently removed hydrogen from the air
HEALTH
‘There’s a Dark Side to Floristry’: Are Pesticides Making Workers Seriously Ill – Or Worse?
Louise Donovan writes for The Guardian:
“On a cold morning in December 2024, florist Madeline King was on a buying trip to her local wholesaler when a wave of dizziness nearly knocked her over. As rows of roses seemed to rush past her, she tried to focus. She quickly picked the blooms she needed and left. I’m not doing this any more, she thought.
That month, after eight years, she closed her Minneapolis-based florist. She had started the business aged 22, transforming it from a one-woman show operating out of her dad’s warehouse into a 10-person team, creating extravagant floral displays for weddings and building a loyal social media following.
The dizziness she experienced that day wasn’t new. By that point, King, 30, had spent years battling fatigue, headaches, and nausea. Her brain was foggy. She’d walk into rooms and forget why she was there. Now, she believes her symptoms were a result of pesticide exposure.
‘It was definitely earth-shattering,’ she says over Zoom. ‘To find out that I feel this bad because of my job … is horrible and stressful. And also, why is no one talking about this?’”
Read how, unlike food, there is no upper limit on pesticide residue levels in flowers in the EU, UK, or U.S.