Umair Irfan
Former correspondent
Latest articles by Umair Irfan
Greenhouse gas emissions need to halve by 2030. They’re on track to rise.
More kids and adults are finding out that they can’t eat their favorite foods. Why?
Redesigned Covid-19 vaccines could save thousands of lives, but few are getting them.
Florida has seen plenty of hurricanes. Why was Ian so deadly?
How Hurricane Ian got so powerful — in just two days.
Populations are growing in coastal cities, which are vulnerable as sea levels rise and hurricanes drive larger storm surges.
Hurricane Fiona showed how improvement efforts remain hampered by years of neglect and mismanagement.
Answers to your questions about the updated omicron variant vaccines.
The FDA just approved Covid-19 vaccines that have BA.5 in their crosshairs. Will people roll up their sleeves?
Hundreds are still dying of Covid-19 every day. It doesn’t have to be this way.