To understand airborne transmission of disease, follow the flow

Viruses and bacteria travel in fluids, such as the air we breathe. Studying exhalations, toilet flushes and rain drops, with math and modeling, can sharpen the big-picture view of how to prevent infections.

Anil Ananthaswamy • knowable
Sept. 4, 2021 ~24 min

Why don’t kids tend to get as sick from Covid-19?

Some children have been hospitalized and some have died, but at a tiny fraction of the adult rate. As children head back to school, scientists are hoping that research will provide answers.

Sara Reardon • knowable
Sept. 2, 2021 ~15 min

Building an immune system for the planet could prevent the next pandemic

OPINION: We need a global information network that spans borders so we can spot — and stop — new pathogens before they threaten world health

David Bray • knowable
Aug. 3, 2021 ~8 min

What will history say about Covid? Museums scurry to collect — and prepare to remember.

A worn pair of nurse’s shoes. That coronavirus model Anthony Fauci used in public briefings. Oral histories, iconic photos and social media posts. All of us are curators now, and what we preserve — as well as what we don’t — will write the pandemic story.

Karen Emslie • knowable
July 30, 2021 ~30 min

Covid cut pollution and got us outside. Let’s keep it up.

OPINION: Urban planners need to find ways to reduce traffic and provide equal access to green spaces 

Ebba Malmqvist • knowable
July 19, 2021 ~7 min

Demographers tackle Covid-19

What they learn could help steer the future of public health

Eryn Brown • knowable
July 15, 2021 ~7 min

Pencils down: The year pre-college tests went away

Many colleges and universities stopped requiring the SAT and ACT during Covid. Will they go back to testing in the future? Select: (a) Yes (b) No (c) Depends (d) Not enough information.

Amber Dance • knowable
July 13, 2021 ~22 min

A year of missing tests

Standardized tests for K-12 students were largely dropped during Covid, leaving a gaping hole in our understanding of students’ progress.

Amber Dance • knowable
July 13, 2021 ~3 min

Let’s put community health workers to work

OPINION: Covid laid bare the scope of health disparities in the US and around the world. Research shows that trained lay people may be the best way to bring evidence-based care to those who need it most.

Miya Barnett • knowable
July 8, 2021 ~9 min

What Sweden’s Covid failure tells us about ageism

Experts say that growing age discrimination in the West is a result of policies that far predate the pandemic

Carl-Johan Karlsson • knowable
July 7, 2021 ~18 min