Michael Miranda had been fully vaccinated for over four months when he tested positive for the coronavirus. “I stared at my phone for a few moments, wondering if this was a death sentence,” said Miranda, who works as a probation officer in Hawaii. After flying home from a trip to the West Coast, Miranda had … Continue reading "What it feels like to get Covid-19 after being vaccinated"

There’s a cliché that has popped up for years in discussions of climate and weather disasters: You can’t blame any individual event on climate change. Climate is all about trends and statistics, the reasoning goes, so you can’t necessarily draw meaningful conclusions from a single data point, be it a heat wave, a hurricane, or … Continue reading "Climate change worsens extreme weather. A revolution in attribution science proved it."

There’s a growing consensus among health experts: Covid-19 may never go away. We’ll likely always have some coronavirus out there, infecting people and, hopefully only in rare cases, getting them seriously ill. The realistic goal is to defang the virus — make it less deadly — not eliminate it entirely. This is not a surrender … Continue reading "We have to accept some risk of Covid-19"

Last month, at the start of a fourth Covid-19 wave in the US, a nurse in a Seattle-area intensive-care unit announced her resignation on Twitter. “No amount of money could convince me to stay on as a bedside ICU nurse right now,” she wrote. “I can’t continue to live with the toll on my body … Continue reading "Why it’s so hard to be a nurse in America, according to two nurses"

Every several years — sometimes just once a decade — when the rains come in just the right amounts and at just the right times, rare flowers speckle the Mojave Desert in California. Some, like the Barstow woolly sunflower, emerge from plants no larger than a thumbnail. They spring forth from seeds that have persisted … Continue reading "Solar farms are often bad for biodiversity — but they don’t have to be"

Vera Rubin didn’t “discover” dark matter, but she put it on the map. Dark matter is a wild concept. It’s the idea that some mind-boggling percentage of all the matter in the universe may be invisible, and wholly unlike the matter that makes up Earth. Rubin is celebrated because she forced much of the astronomy … Continue reading "Astronomers were skeptical about dark matter — until Vera Rubin came along"

The Covid-19 pandemic has changed, and with it, so has the effectiveness of the vaccines. The bottom line remains the same: The mRNA vaccines from Pfizer/BioNTech and Moderna that are most prevalent in the US are still quite effective in preventing any illness from the novel coronavirus, and extremely effective in preventing the kind of … Continue reading "What we actually know about the vaccines and the delta variant"

Since Covid-19 patients started showing up at clinics and hospitals a year and a half ago, doctors and researchers have been hard at work trying to figure out how to treat them. Most drugs and treatments haven’t panned out, producing either no results or small ones in large-scale clinical trials. Many of the few that … Continue reading "How a cheap antidepressant emerged as a promising Covid-19 treatment"

Nearly nine months after the first Americans received their shots, the Covid-19 vaccine from Pfizer/BioNTech received full approval from the Food and Drug Administration for people 16 and older on Monday. This could help increase the number of people willing to get vaccines and make it easier to compel those who are less willing — … Continue reading "What full FDA approval for Covid-19 vaccines really means"

The origins of the novel coronavirus that caused the Covid-19 pandemic remain a mystery. US intelligence agencies have now completed a 90-day probe into the origins of SARS-CoV-2, but their classified findings, according to the New York Times, were inconclusive as to whether the virus escaped from a laboratory in Wuhan, China, or made a … Continue reading "The lab leak hypothesis — true or not — should teach us a lesson"