Second grader Nina Del Bosque sent SciFri a letter with a question about stinging caterpillars. We introduce her to a biologist to answer her caterpillar curiosities.
Finding communicative aliens is a long shot, but if we do, here are a few next steps to consider.
More than half of kids between ages 3 and 8 will have an imaginary companion at some point. Here’s what parents should know.
SAD is more than just the post-holiday blues. Here are some treatment options if you suffer from seasonal depression.
The sun kickstarts a process that converts a vitamin D precursor into the active form your body needs.