Welcome to Sunday. Our top five articles of the week are listed below.

From the archive: Earlier this week drug giant Pfizer announced promising preliminary results in Stage 3 trials of its COVID-19 vaccine, raising hopes that we may soon have a powerful preventive tool against the spreading pandemic. Yet there are many reasons for caution – perhaps the largest being the fact that the vaccine has to be transported and stored at ultra-low temperatures. Many in our newsroom were reminded of this September article by Anna Nagurney of the University of Massachusetts, Amherst, who writes about the shortcomings of the global cold supply chain.

Enjoy the rest of your weekend.

Emily Costello

Deputy Editor

President-elect Biden promises a new White House agenda and style. AP Photo/Andrew Harnik

Biden wins – experts on what it means for race relations, US foreign policy and the Supreme Court

Brian J Purnell, Bowdoin College; Morgan Marietta, University of Massachusetts Lowell; Neta C. Crawford, Boston University

Scholars of race, foreign policy and the Supreme Court give their informed predictions of what to expect under a Biden administration.

The moment Lester Holt of NBC News cut into a statement from President Donald Trump. NBC News via YouTube

Has Donald Trump had his Joe McCarthy moment?

Chris Lamb, IUPUI

When President Trump claimed in a press conference that the election was being stolen from him, three major TV networks cut off their coverage. A media scholar asks if this is a turning point.