Swirling green energy factories capture the energy of sunlight, thus enabling life on earth. Cytoplasmic streaming inside plant cells is very efficient -- the slow turning of each round chloroplast means every square micron gets a chance to create energy and oxygen from sunlight. Here, we're able...

Inside a precious opal, shafts of refracted pastel light and pinfire illuminate miniature caverns. Play of Color is a term mineralogists use to refer to the unique way lightwaves get refracted inside an opal, generating fluctuating colors. The screen shows a 3-millimeter wide area of the gem. Thi...

Only a few will be Queen. Discover what it takes to start a new ant colony in this rare visit inside a founding queen's underground brood chamber.