On Earth, water gets evaporated by the sun from the planet’s surface, and then drops back down from the clouds when it rains. That’s a great source of water, but..is that water safe to drink?  We asked environmental researcher Dr Jonathan Sexton to help us find the answer. Got a question in your...

Let’s say you want to measure something really, really, really tiny. How do you do that? With inches? Centimeters? Millimeters? What if it’s so tiny you can’t even see it? Particle physicist Jessica Esquivel helps us solve this teeny tiny mystery! Got a question that seems too big to answer?...

Black holes are areas in outer space that have gravity so strong that not even light can escape its pull! Some black holes are formed from stars…so how does a star go from a burning ball of gas to a light-swallowing void?  We asked UCLA astrophysicist Dakotah Tyler to help us find the...