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The coronavirus owes its name to the crown-like projections that encircle the capsid.

Definition

Viruses

For something so small, viruses have a huge impact on the world. They are easily the most abundant organisms on Earth (though the use of the word “organisms” is controversial), found in every environment in vast, mind-numbingly large numbers.

An HIV-infected cell

Health

We now know how much our genes influence the risk of contracting HIV

News

Pregnancy scan

Health

Babies are more likely to be conceived in autumn but we don’t know why

News

Satellites are used to assess oil spills and guide their clean-up

Environment

Deepwater Horizon spill may have been a third bigger than estimated

News

Environment

Oil giant BP says it will cut carbon emissions to net zero by 2050

News

orchids

Humans

Don't miss: Maternal artworks, blooming islands and rewarding maths

Culture

Taking Viagra in early labour reduces the need for emergency caesarean

Health

Taking Viagra in early labour reduces the need for emergency caesarean

News

Couple having brunch

Health

Swapping breakfast for brunch on weekends may lead to weight gain

News

chimpanzee puppet

Don't Miss: Craft power, killer brain cells and fostered chimps

Culture

A woman

Health

Miscarriage and ectopic pregnancy may trigger PTSD and depression

Around one in six women who experience early pregnancy loss have symptoms of post-traumatic stress disorder, anxiety or depression nine months later

News

Health

Majority of women who have an abortion don’t regret it five years on

News

Environment

Peak oil demand could arrive much sooner than expected, says oil firm

News

Health

The global failure to push PrEP is hindering the fight against HIV

Comment

Technology

Metallic hydrogen would be the ultimate fuel - if we can make it

Features