The Scale of the Universe by Cary and Michael Huang. This version has an interactive slider and lets you scroll through the zoom levels yourself.

"This is an unprecedented finding. Previously, the best existing treatment for Alzheimer's disease in mice required several months to reduce plaque in the brain."

Three US citizens who lost their sight in childhood have reported a dramatic improvement in vision after having gene therapy in both eyes.

Zebra stripes evolved to keep biting flies at bay

America and Eurasia will crash into each other over the North Pole in 50-200 million years time, according to scientists at Yale University.

"It is as if it has just been blasted off Mars. It is effectively a pristine sample of Mars."