In the 1970s astronauts brought rock samples back from the Moon. Many remained locked away for decades ... including one unique piece of bedrock, the Moonseed. At last exposed to daylight, it proves to be deadly, though not to people. It kills the Earth.

In his new novel, Stephen Baxter, `the best SF author in Britain' (SFX), contemplates rock - living rock. Transported to Earth by Apollo astronaut Jays Malone in 1972, a single shard of bedrock from the Moon contains within its innocuous-looking shell the power to destroy worlds.

Geologist Henry Meacher - his career at JPL in ruins, his marriage over - is given a sample of the Moon bedrock to analyse. He goes with it to Edinburgh University, the only place that will have him. There the deadly Moon rock accidentally comes into contact with the Earth's core in the form of lava from Edinburgh's famous extinct volcanoes. It turns solid rock to seething Moonseed dust. Soon perhaps the whole world will be infected.

Inspired, terrified, Henry Meacher is a changed man. If the worst happens, his plan is to take Earth's displaced peoples from the Earth to the Moon. Baxter's stunning story is one of disaster, desperate measures and damage limitation, forcing humanity to an excess of ingenuity and courage. Ironically, it is a newly terraformed Moon that holds the key to our survival...