What on earth is happening to our planet? And who knows what to do? Certainties are few: every living thing is related to every other living thing; our actions have consequences; change is continual and inevitable.

The National Theatre asked four of the country's most exciting writers to investigate. The team spent six months interviewing key individuals from the worlds of science, politics, business and philosophy to create a fast-paced and provocative new play.

Greenland premiered at the National Theatre, London, in February 2011.