Watch a simple but fascinating chemistry experiment using phenolphthalein and dry ice to demonstrate pH changes in real time. See how carbon dioxide forms acid in water and causes a dramatic color ...

Colour change in animals can occur over different timescales and aids communication and camouflage. Direct evidence of the associated energetic costs has been lacking, but now an experimental study of ...

Keeping indoor spaces comfortable takes a lot of power. About half the energy Americans use in their homes goes toward heating and cooling, accounting for a sizable chunk of both utility bills and ...

This science challenge shows a surprising color-changing reaction using bleach and simple materials. The quick experiment highlights how chemical reactions can create dramatic visual results. A short, ...