Coral frozen in time throws lifeline for Great Barrier Reef

The world's largest store of cryogenically frozen coral is a frosty Noah's Ark for an ecosystem that scientists warn could be the first to disappear if climate change is not combatted fast enough. Trillions of cells from dozens of key coral species on the Great Barrier Reef (GBR) -— collected each year during mass spawning -- offer the chance to regenerate damaged and diminished corals now and into the future. "Essentially, a pause button has been pressed on their biological clocks," said Justine O'Brien...