Want to get drivers' attention? Use road signs showing more action
When a car travelling relatively fast needs to come to an immediate stop, milliseconds matter. Sometimes only a few feet is the difference between life and death. See how signs can make a difference.
Teen brain scans reveal a key to weight loss
It sounds cruel to put an already hungry teenager in an MRI scanner and show pictures of burgers, fries, pizzas, syrupy waffles and ice cream cones. But thanks to 34 willing teens, researchers have found a new way to help adolescents trying to achieve a healthy weight. Check it out.