Scientists just invented microscopic knives capable of stabbing and killing bacteria on contact. The germ theory of disease emerged over the last several centuries to explain the way microscopic ...

They’re bold and glamorous, but beneath them lie bacteria and fungi that could harm your health. According to Jeffrey Kaplan, a biology professor at American University, long nails, whether natural, ...

Starving bacteria (cyan) use a microscopic harpoon—called the Type VI secretion system—to stab and kill neighboring cells (magenta). The prey burst, turning spherical and leaking nutrients, which the ...