Photo by Ivan Aleksic on Unsplash


Brazilian physicians and scientists work to answer urgent questions about the 2015 Zika epidemic — while waiting for the next one.

Occupational therapist Mayara Barata works with 2-year-old Nicolas, who has Zika congenital syndrome, in a photo of December 2017.


Recent studies have deepened our understanding of in-flight Covid-19 risks

Photo: Darryl Brooks/EyeEm/Getty Images


Inside the puzzle to reconstruct the history of SARS-CoV-2 and how it spilled over into humans

Illustration: Bernice Liu


Understanding infants’ peculiar response to the virus may be a key to finding new treatments

Photo: Sirapat Saeyang/EyeEm/Getty Images


One scientist studying centenarians believes the answer may be in their genes

Illustration: Virginia Gabrielli


An uncoordinated response, political polarization, and the sheer size of the country may help explain it

Photo illustration. Photos (Getty Images): alexey_ds/daboost


The risks you need to weigh and the precautions you need to take

Photo: Orbon Alija/Getty Images


Heartbeat monitoring could help achieve your more ambitious fitness goals

A sweaty young woman takes a break while exercising outdoors.
Photo: Peopleimages/E+/Getty Images


Why your face looks tired when you’re tired

Photo: Westend61/Getty Images

Mariana Lenharo

Science and health journalist with a special interest in evidence-based medicine and epidemics. Columbia Journalism School alumna. mari.lenharo@gmail.com.

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