Science

Greek Culture Minister Lina Mendoni stands behind an ancient Greek drinking cup decorated with runners, which was one of the awards presented to Spyros Louis, the Greek winner of the Marathon in the 1896 first modern Olympic Games, at the National Archaeological Museum in Athens on Wednesday, Nov. 13, 2019. Greece's Culture Ministry said Wednesday the ancient vase has been returned to Athens by the University of Muenster in Germany where it had ended up.(AP Photo/Petros Giannakouris)

This screen grab from the website deny.smartpb.net and provided by Censored Planet, a lab at the University of Michigan, shows the website is blocked in Russia. A study by University of Michigan researchers shows Russia is succeeding in imposing a highly effective internet censorship regime across thousands of disparate, privately owned providers in an effort also aimed at making government snooping pervasive. The website address “deny.smartpb.net” translated to English states, “We apologize, but this resource is blocked by decision of state authorities.” The provider includes an ad for wireless television and 30-days free as a gift. (Censored Planet via AP)

CORRECTS LOCATION OF HOSPITAL TO JERAASH -Royal Court chief Yousef Issawi, right, visits one of the victims of a knife attack in Jerash, Jordan on Wednesday, Nov. 6, 2019. A young man from a Palestinian refugee camp on Wednesday stabbed eight people, including four foreign tourists and their tour guide, at a popular archaeological site in Jeraash, in northern Jordan, security officials said. The wounded included three Mexican tourists and a Swiss woman, according to Jordan's Public Security office. Along with the tour guide, three other Jordanians, including two security officers and a bus driver, were also hurt before the attacker was subdued and arrested. (AP Photo/Raad Adayleh)

File - In this Oct. 26, 2019, file photo, riders herd bison during the annual bison roundup on Antelope Island in Utah. Evidence is mounting that wild North American bison are gradually shedding their genetic diversity across many of the isolated herds overseen by the U.S. government, weakening future resilience against disease and climate events in the shadow of human encroachment. Advances in genetics are bringing the concern in to sharper focus. (AP Photo/Rick Bowmer, File)

FILE - In this June 7, 2014, file photo, Odessa High School graduates pose for a group portrait prior to the start of the commencement ceremony in Odessa, Texas. Lower-performing students are doing worse in math and reading, dragging down overall results on the Nation’s Report Card. American fourth graders overall posted a slight decline in8 math and a slight gain in reading, while eighth graders saw results fall in both reading and math. That’s according to results released Wednesday on the 2019 National Assessment of Educational Progress, a nationwide test. (Edyta Blaszczyk/Odessa American via AP)

FILE - In this April 3, 2017 file photo, students walk past the "Great Dome" atop Building 10 on the Massachusetts Institute of Technology campus in Cambridge, Mass. The Massachusetts Department of Public Health said in an Oct. 17, 2019, letter provided to The Associated Press, that it has opened an investigation into "radiation safety and compliance" at the university's Bates Research and Engineering Center in Middleton, Mass. (AP Photo/Charles Krupa, File)

FILE - In this Monday, Jan. 29, 2018 file photo, beds are set up inside a mobile emergency room outside a hospital in Georgia. According to a new study published in the journal Science on Thursday, Oct. 24, 2019, a widely used software program that helps guide care for millions of patients is flawed by unintentional racial bias. (AP Photo/David Goldman)

FILE - This 2014 file electron microscope image made available by the Centers for Disease Control and Prevention shows numerous, spheroid-shaped enterovirus-D68 (EV-D68) virions. Scientists have found the strongest evidence yet that a virus is to blame for a mysterious and rare illness, called acute flaccid myelitis or AFM, that can start like the sniffles but quickly paralyze children. University of California, San Francisco, researchers tested how the immune system fought back and found clear signs that an enterovirus, a common seasonal virus that specialists have suspected, was indeed the culprit. The the Centers for Disease Control and Prevention noted that AFM spikes coincided with seasons when certain strains of enteroviruses - EV-D68 and EV-A71 - were causing widespread respiratory illnesses. (Cynthia S. Goldsmith, Yiting Zhang/CDC via AP, File)

This undated photo provided by Harvard University shows Michael Kremer, professor of economics at the college in Cambridge, Mass., who was awarded 2019 Nobel Prize in economics along with Abhijit Banerjee and Esther Duflo Monday, Oct. 14, 2019, for pioneering new ways to alleviate global poverty. (Jon Chase/Harvard University News Office via AP)