Do they all use a brass dagger? Macrophages are immune cells that are known to engulf pathogens and destroy them by employing several mechanisms, including oxidative burst, induction of Fe(II) and ...

In 1972, two scientists wrote a paper hypothesizing that life more complex than bacteria cannot live in temperatures above 140 degrees Fahrenheit. That led to a scientific rule-of-thumb that persisted ...

Some deadly amoebas may be primed to invade the brain. Naegleria fowleri, known widely as the brain-eating amoeba, typically dine on bacteria in ponds. But the amoeba’s meal-seeking skills might make ...

Naegleria fowleri, commonly known as the "brain-eating amoeba," has been in the spotlight after recent infections led to the deaths of a Louisiana child and a North Carolina teenager in the past ...

"There's a very deep curiosity and desire to understand life at its limits and at its most extreme," she says. "And where that boundary is and what truly are our constraints." It's not unlike ...

Life finds a way—even in some of the most inhospitable environments on Earth. Scientists have just discovered a species of amoeba that can endure hot temperatures previously thought impossible for any ...

Found in volcanic streams in California, the newfound organism has the highest heat tolerance of any complex life on Earth. By K. R. Callaway Near the forested trails of Lassen Volcanic National Park ...

Naegleria fowleri, a "brain-eating amoeba," is a deadly threat found in warm freshwater. Florida has reported the second-highest number of cases in the U.S., behind only Texas. Infections are rare but ...

Naegleria fowleri is making headlines after recent infections linked to warm freshwater exposure. The rare amoeba can cause a severe brain infection that is usually fatal. At least two U.S. cases of ...