American Glass Research Senior Scientist, Dr Clarissa de Lima presented a co-authored paper entitled “Effects of composition on the durability and weathering of flat glass” at the ‘Challenging Glass 8 Conference’ at Ghent University in Belgium, on June 23, 2022.   Here is a brief from the abstract:  Among the environmental factors affecting glass weathering are humidity, exposure time, temperature, and the presence of pollutants in the atmosphere. Notwithstanding that the weathering produced depends on numerous factors, the important weathering effect of high humidity may be specifically mitigated by using a good chemical composition for the glass. To evaluate this relationship, flat glass samples from three sup-pliers were studied.