Cheerful elementary STEM schoolgirls enjoy watching for a chemical reaction as they pour baking soda and vinegar into a fake volcano. One of the girls stirs the liquid as the 'volcano' overflows. They ...

Aerial image taken with a drone. Uyuni Salt Flats. Altiplano, Bolivia. Rainy Season. Tunupa Volcano. Clouds Reflection on Water in Lake Surface. South America. Royalty-free licenses let you pay once ...