You Don’t Need Single-Use Plastic Bags. You Need a Mask

Over the past few months, evidence has mounted that the virus’s primary mode of transmission is through the air. One study in March found the virus on air vent blades in a Covid-19 patient’s room in Singapore. Another the same month showed that infectious particles...

Your Firework Smoke Could Be Tainted With Lead

The holiday pyrotechnic smoke can be so thick, in fact, that historically, epidemiologists studying ambient levels of metal in the air actually throw out the data around these two dates. Those aberrations are just too big. But perhaps that’s not surprising, as...