UC San Diego cognitive scientist Philip Guo created Python Tutor, a free tool that makes code “visible” step by step. The research behind it earned a Test of Time award, recog ...

At a potluck, you ate the best chocolate chip cookie—golden-brown, thick and chewy. Unfortunately, you don't know who made the cookie to get the recipe from, so you decide to recreate it. Using ...

Researchers have developed a tiny antibody that can find a common cancer protein and make tumors light up during PET scans. In tests with mice, tumors containing the protein EphA2 glowed clearly when ...