Earth - David Brin

It's fifty years from tomorrow, and a black hole has accidentally fallen into the Earth's core. A team of scientists frantically searches for a way to prevent the mishap from causing harm, only to discover another black hole already feeding relentlessly at the core - one that could destroy the entire planet within two years.

But some even argue that the only way to save the Earth is to let its human inhabitants become extinct: to let the million-year evolutionary clock rewind and start all over again.

From an underground lab in New Zealand to a space station in Low Earth Orbit, from an endangered species conservation ark in Africa to a home in New Orleans, EARTH is a gripping novel peopled with extraordinary characters and abundant with challenging new ideas. Above all, it is an impassioned testament about our own responsibility to our endangered planet.