The color of hydrangea flowers can change from pink to purple and blue by tweaking the soil. How do other plants react to those changes? Sydney Kozak explored just that. Her project, “Does changing ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Elliot Spencer, co-host of Rollercoaster, walks up to Ruben, looking despondent. In front of Ruben is a ...