Umair Irfan
Former correspondent
Latest articles by Umair Irfan
As Covid-19 continues to wreak havoc, humans still aren’t doing enough to prevent the next pandemic.
The Pfizer/BioNTech shot got the green light from regulators — which could encourage some holdouts to get vaccinated.
Scientists can now calculate how much humans have made disasters worse.
“There’s no going back” — and there’s no room for wishful thinking, top climate scientists say.
Age, race, income, and, of course, politics.
The US needs a national standard to protect workers from heat.
Keep an eye on breakthrough Covid-19 cases, but remember that they’re expected.
How an ancient American Indian practice can reduce the risk of massive wildfires.
The delta variant has made Covid-19 more dangerous than ever for unvaccinated people.
The bipartisan deal is a disappointment on climate change, but it’s only part one. Here’s what could come next.
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