A whole range of scientists are looking at engineering technologies to mitigate climate change. We could for example reflect more solar radiation back into space by making more reflective clouds; or we could trap carbon dioxide out of the atmosphere and bury it underground, to diminish the “greenhouse” effect. Would such technologies work, and would...

A recent move by the Federal Government to ban the disposal of dredge spoil near the Great Barrier Reef has been met with scepticism by environmental campaigners concerned for the health of the reef.