When you accelerate in a car, the seat you are sat in pushes you forwards, with the result that you feel like you are being ...

Weather balloons are used frequently to gather key data on weather conditions. University of Missouri meteorology students ...

Helium is often used to fill party balloons, weather balloons and airships due to its low density. Deep-sea divers rely on helium to control the proportions of oxygen and nitrogen they get from ...