Healthy democratic polities feature competing visions of a good society but also require
some level of cooperation and institutional trust. Democracy is at risk when citizens become …

Rising partisan animosity is associated with a reduction in support for democracy and an
increase in support for political violence. Here we provide a multi-level review of …

There has been growing concern about the role social media plays in political polarization.
We investigated whether out-group animosity was particularly successful at generating …

Numerous polls suggest that COVID-19 is a profoundly partisan issue in the United States.
Using the geotracking data of 15 million smartphones per day, we found that US counties …

Objective To study the US public's health behaviors, attitudes, and policy opinions about
COVID-19 in the earliest weeks of the national health crisis (March 20–23, 2020). Method …

Does affective polarization—the tendency to view opposing partisans negatively and co-
partisans positively—undermine support for democratic norms? We argue that it does …

Science is frequently used and distorted to advance political, economic, or cultural agendas.
The politicization of science can limit the positive impacts that scientific advances can offer …

Social media has been transforming political communication dynamics for over a decade.
Here using nearly a billion tweets, we analyse the change in Twitter's news media …

Political polarization impeded public support for policies to reduce the spread of COVID-19,
much as polarization hinders responses to other contemporary challenges. Unlike previous …

This paper presents the first longitudinal study of sex disparities in COVID-19 cases and
mortalities across US states, derived from the unique 13-month dataset of the US …