The world's oldest known material is from Western Australia. But for much of Australia's geological past, the eastern states simply didn't exist. They're relative newcomers to our ancient continent.
Researchers have found a small piece of a "lost continent" buried underneath the lava on Mauritius.
Fire has been viewed as the main protagonist in creating Africa's iconic savannas. However, new research shows that browsing animals created savannas millions of years before fire became important.
Fifty years on from a groundbreaking paper, geophysicists have progressed from believing continents never moved to thinking that every movement may leave a lasting memory on our planet.