Flickering sky islands generate andean biodiversity

A new video shows how climate change connected and disconnected Andean "sky islands" during the past million years. The innovative mathematical model used to make the video was based on fossil pollen records and shows how ...

Evidence of self-forming waterfalls reported

A trio of researchers with the University of Nevada, Reno, the California Institute of Technology and GFZ German Research Centre for Geosciences reports evidence that suggests some waterfalls self-form in the absence of external ...