When the agent made contact with a catalyst embedded in the material, a chemical reaction bonded the two faces of the crack together.

BBC: Time to heal: The materials that repair themselves

If an estate plan includes more than one pet, they should be kept together, especially if they have bonded.

FORBES: Estate Plans Should Include Provisions for Pets

The city's boosters claim that people were bonded more closely than ever to the Big Apple by the communal pulling together of the recovery effort.

ECONOMIST: New York city one year on