News

Genetics

Scientists find new way to corral genetically engineered bacteria

Engineering E. coli to depend on human-made molecules may keep genetically modified bacteria from escaping into nature.

Neuroscience

Brain’s protective barrier gets leakier with age

Aging influences the breakdown of the blood-brain barrier, which may contribute to learning and memory problems later in life.

Neuroscience

Newly identified brain circuit hints at how fear memories are made

A newfound set of brain connections appears to control fear memories, a finding that may lead to a better understanding of PTSD and other anxiety disorders.

Physics

Speed of light not so constant after all

Even in vacuum conditions, light can move slower than its maximum speed depending on the structure of its pulses.