Are Laser Beams Visible Like In The Movies?

October 15, 2016 Physics

How Do Tortoises And Turtles Live For So Long?

October 15, 2016 Biology

At What Altitude Does Earth End And Space Starts?

October 14, 2016 Astrophysics

Why Was The Eiffel Tower Built?

October 13, 2016 History

How Does Anesthesia Work?

October 11, 2016 Medicine

If Heat Cannot Travel Through A Vacuum, Why Does The Sun Feel Hot?

October 11, 2016 Physics

Why Don’t Airplanes Hover In The Sky And Let The Earth Pass Beneath Them?

October 10, 2016 Physics

How Did America Get Its Name?

October 9, 2016 History

Why Are High-Altitude Regions So Cold?

October 8, 2016 Earth Science

Why Does Tequila Burn Your Throat?

October 7, 2016 Chemistry

What If An Astronaut Skydives From Space?

October 6, 2016 Astrophysics