Pope Francis has addressed hundreds of thousands of students from around the world in Portugal for World Youth Day 2023 being held in Lisbon. The Pope spoke of the essential role of women in society and urged university students to view knowledge as a responsibility they should use to combat global inequality.
Research started at the University of Iowa Technology Institute has led to a new assessment model that scientists believe will yield more accurate estimates of nitrogen oxides from soil, which are increasingly responsible for air pollution.