The origin of the oyas is mysterious as to when and where they appeared. They would have appeared in China or in the Roman Empire,
Category: Nature
Post-Coronavirus: towards a greener future?
This confinement period, which has now lasted for about 20 days, will have had a positive impact on the environment. Healthier air, less pollution and
Dry Waters Create More Carbon dioxide
Dried out lakes and rivers cause increased carbon dioxide emissions. So far, this has hardly been considered. A project by the Helmholtz Center for Environmental