Healthcare

Brain implant translates neural activity into letters, letting a paralyzed man “speak”
Doctors may not be ready for blood tests that screen for multiple cancers at once
“Laughing gas” may offer quick, long-lasting relief from depression
Organ regeneration could overcome liver failure, without a transplant
melanoma recurrence
AI could help cancer patients avoid a deadly recurrence
New exercise study could find drugs that mimic working out 
newborn hearing screening
These earbuds can tell if a newborn has hearing problems
To avoid the worst effects of aging, we might need to exercise harder than we thought
New VR body suit lets you see inside your body while you exercise 
New smart contact lens monitors for glaucoma 24/7