They live in a world where two planets face each other closely, but typically do not interact.

Our unique planet faces a bleak and uncertain future.

Our planet is facing the greatest problems it's ever faced, ever.

The planet faces many environmental challenges, but none of them come close to global warming.

What do you see as the most serious problems that society, or the planet, is facing at present?

With this musical discovery, the planet faces a sudden and unstoppable turn of events that brings about the eponymous uprising.

In 1976, he termed irresponsible the predictions that the planet faced an impending ice age.

As the planet faces extinction, attention is paid to rescuing art, antiques, elephants and flamingoes.

Global warming is one of the most complicated issues which the whole planet is facing.

If the world's population continues to grow at present rates, our planet will face a serious crisis in the near future.