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Pharmaceutical companies have declined to license their COVID vaccines, so South African scientists have copied them instead

A scourge that once infected millions of the world’s poorest people is close to being wiped out in humans — but infections in animals complicates the picture.

Research eminence alone is not enough for top science posts.

Scientists say newly published guidelines will spur research into crops that have increased yields and greater resilience to climate change.

Shifts in starlight from Proxima Centauri, observed over more than 2 years, reveal its third planet.

Massive study shows a long-term, substantial rise in risk of cardiovascular disease, including heart attack and stroke, after a SARS-CoV-2 infection.

The fingerprint of the last ice age can still be seen in the genomes of reindeer that make long migrations.

Gel blocks up to 2 millimetres long are the biggest structures yet to be brought to order by microscopic lengths of DNA.

The volcano that devastated Tonga on 15 January is challenging ideas about the physics of eruptions. Plus, evidence of Europe’s first Homo sapiens and lessons for success from Nobel laureates.

Experience gained overseas can be used to develop home-grown solutions to local challenges.

Our journeys were different — but we both found solace in sharing our pain with a supportive network of colleagues, say Clare McFadden and Alison Behie

Researchers take stock of the US$1.8-billion initiative’s first five years as Biden announces ambitious target.

The latest science news, in brief.

Scientists trace variation in methyl bromide levels to an increase in fires — which are linked to the climate pattern El Niño.

Pterosaurs, prehistoric beasts that lived alongside the dinosaurs, not only flew like birds, but also vomited like them.

RNA in blood reveals signs of pre-eclampsia before symptoms occur, and the issue of urine in our sewage and what can be done about it.

In response to visual stimuli, hippocampal neurons in a body-fixed rat can respond to and encode visual information without locomotion or task demand, similar to the visual cortex.

Molecular dynamics simulations show that the light elements hydrogen, oxygen and carbon become highly diffusive like liquid in solid iron under the inner-core conditions, leading to a reduction in the seismic velocities.