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 […]

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 […]

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 […]

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 — […]

The remnants of Hurricane Ida reached the New York City area on Wednesday, battering the region with record rainfall that flooded streets, subways, and basements. New York and New Jersey declared states of emergency, and officials in the Northeast had reported more than two dozen deaths as of Thursday afternoon. Ida, which made landfall in […]

Medicare, the federal health insurance program that covers Americans over 65, is facing an impossible dilemma: Should it cover a new and expensive medication for Alzheimer’s disease, which afflicts 6 million Americans and for which there is no existing treatment, even though the drug might not actually work? It is an enormous question. Alzheimer’s patients […]

Another Covid-19 vaccine, this one from the biotech firm Novavax, has posted superb results in a phase 3 clinical trial, the company announced on Monday. But with more than half of US adults now vaccinated against Covid-19, the biggest impact of these results may be in other countries. The Novavax vaccine stands out from other […]

The Covid-19 pandemic upended daily life so drastically that there was a moment when it seemed to be making a dent in the climate crisis. Rush-hour traffic disappeared, global travel slowed to a crawl, and the resulting economic tailspin sent energy-related pollution plummeting almost 6 percent globally. This kind of decline in pollution is unprecedented […]

The world’s leading health organization, the WHO, repeatedly broke its own rules and spent millions of dollars on high-priced management consultants, according to a new independent audit — even as the United Nations agency has struggled to pay for lifesaving equipment and vaccines in its global Covid-19 response. An unnamed consulting company, which Vox has […]

Tiny, wriggling horrors are hatching right now, under our feet, across the country. No, not the billions of Brood X cicadas emerging throughout the eastern US. I’m talking instead about baby invasive “crazy worms” that thrash through garden, farm, city, and forest soil, growing to 3 to 6 inches in length, sucking up nutrients, and […]