Plants give a clear indication of the quality of the air they are “breathing”. Members of the National Center for Atmospheric Research in Boulder, Colorado have planted an Ozone Garden—a garden comprised of plants that show visual signs of damage when air quality starts to fall. Though the US environmental standards set ozone contamination limits at 75 parts per million, some of the plants in the garden show signs of distress at 40 parts per million. The 4 plants in the garden include milkweed, snap bean, potato and cutleaf coneflower.
Want to know the quality of the air you’re breathing? Watch your plants
More of Today's Solutions
Nepal’s highest court orders government to guarantee same-sex marriage rights
BY THE OPTIMIST DAILY EDITORIAL TEAM Finally, Nepal has marriage equality. On June 18, 2026, the Supreme Court issued a binding directive ordering the ...
Read MoreThe skin compound that makes some more delicious to mosquitoes than others
BY THE OPTIMIST DAILY EDITORIAL TEAM Mosquitoes don’t pick targets randomly. They run a multi-stage sensory scan, and new research is beginning to explain ...
Read More3 healthy habits to boost your immunity this cold and flu season
A mild headache that just won't go away, a box of tissues by the bed, and sleeping uncomfortably with your mouth wide open... It's ...
Read More3 foolproof ways to signal commitment in the confusing world of modern dating
Even while the ceremony and tradition of conventional marriages are losing their appeal to many couples these days, the pursuit of long-term relationships remains a ...
Read More
