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91av. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Health

5 graphs that show how the world suddenly changed when covid-19 hit

From carbon emissions to the share price of videoconferencing firm Zoom, these graphs tell the story of how the covid-19 pandemic changed everything

News

Health

US teens are using less of every substance – except for one

News

A quarantine control notice at Narita airport in Japan in January 2020

Health

The key events during the covid-19 pandemic

News

Will there be another pandemic after covid-19 and are we prepared?

Health

Will there be another pandemic after covid-19 and are we prepared?

News

Covid-19 led to a new era of vaccines that could transform medicine

Health

Covid-19 led to a new era of vaccines that could transform medicine

News

Someone with long covid having rehabilitation at the Vall d'Hebron hospital in Barcelona, Spain, in June 2020

Health

Everything we know about long covid - including how to reduce the risk

News

An aerial photo taken in January 2020 shows excavators at the construction site of a new hospital being built to treat people with covid-19 in Wuhan, China

Health

The most iconic images taken during the covid-19 pandemic

News

Visualising a virus: How our covers captured an unfolding crisis

Health

Visualising a virus: How our covers captured an unfolding crisis

Regulars

Five years on, have we learned the lessons of covid-19?

Health

Five years on, have we learned the lessons of covid-19?

News

2NR8F5N Two workers try to get boxes of vegetables over the barriers in the empty road outside the Union Hospital in Wuhan in central China's Hubei province Thursday, Feb. 20, 2020. The city badly-hit by the COVID-19 escalated its ban on vehicles in the outbreak. (FeatureChina via AP Images)

Health

We must revisit the covid-19 pandemic to prepare for future outbreaks

It is tempting to lock memories of the height of covid-19 away but looking back is vital for preparing properly for the next pandemic

Leader

Health

The big unanswered questions about the covid-19 coronavirus

News

Health

How the covid-19 pandemic distorted our experience of time

Comment

Health

Ozempic and Wegovy have heart health benefits beyond just weight loss

News

Health

Why US obesity rates fell for the first time in decades

News