In this issue:
"A Look Inside the Brain": A new experimental approach at the interface of chemistry and biology lets scientists peer into the deepest reaches of the body's master controller.
"Under the Sea of Enceladus": Evidence mounts that Saturn's icy moon harbors active hydrothermal vents, making it one of the hottest places to look for life beyond Earth.
"The Right Pill for You": Now personalized genetic medicine offers tests to avoid dangerous drug reactions—yet doctors are reluctant to use them.
"On the Trail of El Niño": This fickle and influential climate pattern often gets blamed for extreme weather. A closer look at the most recent cycle shows that the truth is more subtle.