I’m Vaccinated. When Is It Safe to Take My Mask Off?

Outdoor concerts, for example, often have people tightly packed together for several hours and carry more risk, Popescu says. “Ventilation is important and there’s great ventilation outside, but that can only do so much when you’re shoulder-to-shoulder with hundreds of people for hours, yelling and shouting,” she says. But I’m Healthy and a Risk-Taker Aside […]

An Experimental Birth Control Attacks Sperm Like a Virus

Over the millennia, people have come up with some very effective ways to avoid having babies. The ancient Egyptians and Greeks used linen sheaths and animal bladders, precursors to modern latex condoms and diaphragms. Now we’ve got spermicides, sponges, intrauterine devices, pills, and implants to keep sperm and egg apart. There’s just one problem: The […]

Why Florida’s Covid Surge Is Screwing With the Water Supply (Hint: Oxygen)

On Wednesday, the Tampa Bay water utility announced a rather bizarre side effect of Florida’s out-of-control Covid surge: It wasn’t getting enough deliveries of liquid oxygen to treat its water. More than 17,000 Covid patients—who require supplemental oxygen to stay alive—are now hospitalized across the state, and there isn’t enough oxygen to go around.  Even […]

The Poop About Your Gut Health and Personalized Nutrition

alt hed: The Poop about Stool Sample Tests and Personalized Nutrition Changing your diet to improve your health is nothing new—people with diabetes, obesity, Crohn’s disease, celiac disease, food allergies, and a host of other conditions have long done so as part of their treatment. But new and sophisticated knowledge about biochemistry, nutrition, and artificial […]