The candle test is one way to assess (roughly) the effectiveness of a mask. If your mask passes the test, you can help it do an even better job with some simple hacks.

With cases on the rise, people want to know: How do I look after a family member who's been diagnosed and is at home? And how do I show support for a friend with the virus?

We look at the risks to consider (and precautions to take) before a restaurant meal. Also: How risky is it to fly on fully booked flights?

Also: if you're headed back to a physical workplace, how do you keep safe? And do you need to have a mask on all the time at work?

By popular demand, we've updated our guidelines for repair people in the home — and taken on new topics as well.

They're swarming in gargantuan numbers in parts of Africa and South Asia — and posing a major threat to the food supply. If you have questions about these insects, we have answers.

A rich country might spend $5,000 or more on health care per person. A poor country might spend as little as $19 per person. How will that affect responses to the novel coronavirus?

This week we tackle frequently asked questions — and some infrequently asked ones as well. And we also have advice on how to decide about possible testing if you attended a protest.

Also: If I head to a new state or country for a visit, do I need to self-isolate to protect others in case I'm contagious?

Sister Astridah Banda noticed that most of the information about the coronavirus was being shared in English in a country where 70 languages are spoken. That gave her an idea.

Public health has come a long way since the deadly flu, but we find ourselves in an oddly similar moment, using many of the same measures employed in 1918, a medical historian says.

The United Nations and Amplifier, an arts group, called on artists to create inspiring and informative posters, graphics and animations around the coronavirus. Here's a selection of submissions.

In his new book, The Human Planet: Earth at the Dawn of the Anthropocene, George Steinmetz offers a bird's-eye view of the mark humans have made on the global landscape.