Hero of the day: an engineer from Andorra builds functional prosthetic limbs from ordinary LEGO Technic sets
David Aguilar was born with an underdeveloped right hand and created his first prosthetic arm at the age of nine.
By the age of 26, he's already in the Guinness Book twice - for the world's first LEGO prosthetic arm and the first LEGO prosthetic with leg control, which he made for a boy from Kazakhstan.