Artificial light at night can have a disruptive effect on bats, but not if the light is red. Switching to red light may therefore limit or prevent habitat loss for rare, light-shy bat species. The ...

Is it an acid, base, or neutral? Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties.

Stomachaches are no fun! There is a medicine, patented over 150 years ago and still used today, that reduces stomach acid so that you feel better. This cloudy-looking liquid, called milk of magnesia, ...

The sea around Italy's supervolcano Campi Flegei turned red, signalling possible volcanic activity beneath the water. The volcanic crater lake—the Averno—n Pozzuoli, near Naples, turned red last ...