Immune cells in the lungs provide a rapid counterattack to bloodstream infections, a new study in mice finds.
A gene helps nerve cell axons extend to parts of the brain to deliver serotonin, a brain chemical associated with depression.
A new look at marine Trichodesmium microbes suggests trouble for nitrogen fixation in an acidifying ocean.
Fish venom shows great diversity and is being studied to treat pain, cancer and other diseases.
News in Brief
Cassini has completed its first dive between Saturn and its rings. Along the way, it snapped stunning pics of the planet’s atmosphere.
Ancient groundwater that is thousands of years old is still susceptible to modern pollution, new research suggests.
The mazelike patterns of the ocellated lizard’s skin follow a set of rules from computer science.
The bubble that envelops the planets and other material in the solar system does not have a tail, new observations show.
Immune system cells called macrophages help heart cells rhythmically contract, maintaining the beat of mice’s hearts.
The recent rise in atmospheric methane concentrations may have been caused by changes in atmospheric chemistry, not increased emissions from human activities, two new studies suggest.
50 Years Ago
Half a century later, plate tectonics is well-established but still an active field of research.