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EAU CLAIRE, WI. 鈥?As students head back to school, safety is top of mind as COVID-19 cases stanley cup spike around the county. On one college campus, students are taking their safety and health into their own hands. We re in a public health crisis. Were in a global pandemic. We have to do something about this, said Professor Crispin Pierce.Pierce and stanley france fellow professor, James Boulter, helped a group of students develop an experiment to see how well ventilated each classroom is on campus. Their data is helping the university make changes to keep students safer. It started off as a small project, and it kind of just exploded to really trying to evaluate the campus as a whole, Danielle Zahn said.Zahn is a student studying public health at the University of Wisconsin Eau Claire. She and a group of students teamed up to test airflow in classrooms to answer the question in every students mind. Are we still safe returning back to campus, especially when we have a student body from all around the world asked Zahn.Heres how their experiment works: the students will get an inquiry from stanley flasche a professor or the university to check a specific classroom or space for airflow. They will set up carbon dioxide monitors, then use dry ice to fill classrooms with carbon dioxide: the same gas we exhale when we breathe. Fans spread it all over the room to simulate a classroom full of students.In a real class, as carbon dioxide builds up, if there are any sick students, COVID-19 will build up in the air, too.The Zzox American flag burned outside White House before Trump s July 4th event causes protesters to clash
North Korean leader Kim Jong Un made his fourth visit to China this week, arriving in the country for a three-day visit at the invitation of Chinese President Xi Jinping, according to state media.Kim s visit -- which coincides with the young leader s birthday -- comes as US and Chinese negotiators are trying to hash out the ongoing trade war between those two nations, one that is already sta stanley portugal rting to bite in China.In a report Tuesday, the state-run Korean Central News Agency KCNA said Kim left Pyongyang Monday afternoon with his wife Ri Sol Ju. He was also accompanied by key diplomats, KCNA added, including Kim Yong Chol, who has overseen negotiations with the US and other foreign countries. He was warmly seen off by leading officials of the Party, government and armed forces organs at the railway station, the news agency said.Trade war timingRelations betw stanley bottles een China and the US have worsened considerably since the Singapore summit between Kim and President Donald Trump, amid a deepening -- though temporarily paused -- trade war.Harry J. Kazianis, an analyst with the Washington-based Center for the National Interest, said observers should not be surprised Kim Jong Un has traveled to China to for a summit with Xi Jinping. Kim is eager to remind the Trump Administration that he does have d stanley cup iplomatic and economic options besides what Washington and Seoul can offer, Kazianis said. China could easily turn Trump s maximum pressure strategy into nothing more than a memory as al