An Operation Smile volunteer reverses an oxygen mask so a child with a cleft condition can blow a bubble for the first time in Guadalajara, Mexico. (Operation Smile Photos)
Photo credit: Guy Ben-Ary/YouTube & By Non Event – Alvin Lucier, CC BY-SA 2.0 – Alvin Lucier''s "brain" is still composing music 3 years after his death.
