How to Buy a Real N95 Mask Online

A year into the coronavirus pandemic, buying a heavy-duty medical mask online remains downright maddening. The most coveted mask to keep safe against Covid-19 has been the N95, the gold standard for pandemic protection because of its tight fit and 95 percent efficiency in filtering airborne particles. Then there’s the KN95 from China, a mask…

The Rise of the Wellness App

Our dependency on technology has concentrated wealth in America, making San Francisco home to the most billionaires per capita than any other city. Nearly all of them are white, cisgender men. The pay disparities that have long existed in Silicon Valley are growing, reproducing race and class hierarchies that devalue domestic and menial labor and…

Plastic recycling results in rare metals being found in children’s toys and food packaging

Some of the planet’s rarest metals – used in the manufacture of smartphones and other electrical equipment – are increasingly being found in everyday consumer plastics, according to new research. Scientists from the University of Plymouth and University of Illinois at Urbana-Champaign tested a range of new and used products including children’s toys, office equipment…

An mRNA vaccine for cancer immunotherapy

Messenger RNA (mRNA) vaccines to prevent COVID-19 have made headlines around the world recently, but scientists have also been working on mRNA vaccines to treat or prevent other diseases, including some forms of cancer. Now, researchers reporting in ACS’ Nano Letters have developed a hydrogel that, when injected into mice with melanoma, slowly released RNA…