Half a year since the emergence of Covid-19 and months since cities and states went into lockdown—and, to varying degrees, came out again—we’re more than familiar with the basics of what we should do ...

Clear, informative PowerPoint slides increase the effectiveness of your presentation. A legend helps people understand what you're referring to in a graphic. You can create color-coded legends in ...

A new study shows that parents are more likely to understand a body mass index chart if it's color-coded, like a traffic light, than the standard charts currently in use. A new study shows that ...