HOW TO TURN A RAINY DAY INTO ART

Seattle artist Peregrine Church uses rain as his medium. By stenciling images and words on the sidewalk in water-repellent spray, he creates Rainworks—art pieces that appear only when it’s wet outside. Instead of shelling out $45 for the paint Church uses, you can follow the lead of DIYer Dan Rojas to make your own. Rojas…

CAN WE PREDICT PTSD WITH SALIVA?

If doctors knew which trauma survivors would develop Posttraumatic Stress Disorder, or PTSD, when the patients arrived at the emergency room, they could prevent it from occurring in the first place. Sisi Ma, a research scientist at New York University’s Langone Medical Center, presented her work trying to do just that at the Leveraging Big…