Stanford physicists used images like this one, showing a clumping of rubidium atoms, to determine that those atoms had achieved a record-low temperature.
Athletic wear, such as socks, are among the clothes frequently treated with nanosilver to kill bacteria (and sometimes stink). But laundering can wash away that silver and any germ protection it initially offered.
DNA (orange) wraps around proteins called histones (blue). Such tight packing allows the cell to cram two meters (6.6 feet) of DNA into a cell’s nucleus.