N95

When we call something "clickbait," we don't mean it as a compliment. But let's be real: we also click. It's hard to resist a spicy story, and 19th-century newspaper tycoon William Randolph Hearst knew it. At a time when most papers merely reported events, his papers created them ...  Show more

In the late 1890s, the United States fought wars and backed independence movements around the world. By the time the fighting was over, the US emerged as a new global power —and with it, a new identity. This week: how the U.S. became an empire, and why it started calling itself A ...  Show more

Peter Tsai isn’t exactly a household name, but his invention is. In 1995 he patented the fabric used to make N95 masks, which are one of the most effective face coverings to prevent the spread of Covid-19. CNN Chief Medical Correspondent Dr. Sanjay Gupta talks to Tsai about the r ...  Show more

Masks are crucial, but not all of them are created equal. The N95 respirator mask has been the gold standard from the beginning, and our need for its efficacy is only becoming clearer. CNN Chief Medical Correspondent Dr. Sanjay Gupta talks about the latest guidance on mask wearin ...  Show more

The American Civil War saw a transformation in medical provision on the battlefield. A loose grouping of medical practitioners was reshaped into a burgeoning, professionalised occupation. How did the medical profession rise to the challenge of treating thousands of wounded sol ...

Masks, you may not have worn them before 2020 but now we’re all at it. With the rise of the Omicron variant countries have scrambled to reintroduce public health policies, among them mask wearing. Health officials and scientists agree that masks help reduce the incidence of covid ...  Show more