Some states passed laws permitting themselves to change or even cancel corporate charters.

VOA: special.2010.03.05

Some insects build cocoons around themselves for protection while they grow and change.

VOA: special.2010.03.28

For example,they change color to protect themselves from enemies.

VOA: special.2010.01.04

But they refused to commit themselves to a figure on helping developing nations battle climate change, saying they would wait to see what other countries offered first.

VOA: standard.2009.03.20