The study revealed that blue rings were more common in pine trees than in junipers, appearing in 2.1 percent of the trees' rings compared to 1.3 percent in shrubs. Notably, 1902 and 1877 stood out ...

Overall, only 2.1% of the pine trees' rings and 1.3% of the juniper shrubs' rings were blue; the cells which hadn't lignified properly were mainly found at the end of growth rings, in latewood.

Wind tunnel experiments demonstrate that leaves trap considerable numbers of particles with a diameter less than 100 nanometers. The group put nine tree species through their paces, with three clear ...