Federal clearance sets the stage for unlimited clinical use of the tool by Eko Devices, a Skydeck accelerator-nurtured business.

Heart rates of big-wave surfers are among the surprises from 30 years of studying exercise physiology in people and wild animals.

Resurgence of cycling is taking a toll on middle-aged cyclists: More are getting hurt, and their injuries are more serious.

Method combines chemotherapy drug with adoptive cell transfer, in which a patient’s own immune cells are reprogrammed to target the disease.

New solar cells absorb high-energy light at 30 times the concentration of conventional cells.

Robotic step training and noninvasive spinal stimulation enable patient to take thousands of steps.

The disorder contributes to a breakdown of the blood–brain barrier, which protects brain tissue.

New technique could pave the way for ultra low power and high-security wireless communication systems.

The state has built momentum on water reform, but rains from an expected El Niño could stall it.