Millions of years ago, vegetation across much of the world underwent a transformation as grasses with a new way of doing photosynthesis displaced previously dominant plants, shrubs and trees. A new study examines what got these plants started, and why they spread so far and wide.

A new study has uncovered when and why the native vegetation that today dominates much of Australia first expanded across the continent.

Using supercomputers to analyze hundreds of thousands of genetic markers, scientists say they have found how a common weed uses its genetic code to adapt to changes in its environment such as cold and drought. The findings could help develop crops that are more adaptable to climate change.