Umair Irfan
Former correspondent
Latest articles by Umair Irfan
There are still effective ways to adapt that can also lower emissions, the latest IPCC report from UN scientists finds.
The future of sea level rise is being written underneath Antarctica and Greenland.
BA.2 is a fast-spreading variant of the omicron variant. Here’s what we know.
It will be hard to host the Winter Games when winter isn’t cold.
Covid-19 vaccines for young children are coming. But it’s complicated.
Why do Covid-19 surges seem to end as suddenly as they begin?
Deaths tell one story of the pandemic. The lives saved tell another.
Scientists envision a shot that could protect against many coronaviruses in one fell swoop.
Antibodies aren’t the whole story.
It’s been a long road, but recent advances mean we’re closing in on a game-changing technology.