MATHEMATICS:
Why Double Bubbles Form the Way They Do
Barry Cipra
An international team of mathematicians has announced a proof of the "double bubble" conjecture, which states that when two
soap bubbles come together, they form a double bubble in order to enclose the total volume with the minimum surface area.
By honing a new technique for analyzing the stability of competing shapes, the team has shown that only the standard shape
is truly minimal--any other, supposedly area-minimizing shape can be ever so slightly twisted into a shape with even less
area, a contradiction that rules out these other candidates.