Human Stories

Blind people can 'see' using echoes

Echolocation, a process used by bats to navigate, is also being used by many humans.

Surprising new study 

Also: 

• Humans hear underwater?
• A seeing-eye sheep
• Stem-cell sight debate

Mom whose brain 'rebooted' builds new life

When a household accident wiped out her memory, Su Meck had to learn even basic skills from scratch.

'Scary' path 

Also: 

• See her story in photos
• Why learning gets harder