Tuvalu, a country of nine coral atolls in the Pacific Ocean, faces the prospect of physical disappearance this century. With an average altitude of just two meters, the nation has already seen soil ...

A lifeline has been extended to the people of Tuvalu, a low-lying Pacific nation where rising sea levels are creating ever more problems. Each year, Australia will grant residency to 280 Tuvaluans.

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...