James Gallagher - BBC Health
"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."
Helen Briggs - BBC News - Health
Three US citizens who lost their sight in childhood have reported a dramatic improvement in vision after having gene therapy in both eyes.
Victoria Gill - BBC Nature
Zebra stripes evolved to keep biting flies at bay
Neil Bowdler - BBC News Science &...
America and Eurasia will crash into each other over the North Pole in 50-200 million years time, according to scientists at Yale University.
Anna-Marie Lever, Jonathan Amos - BBC...
"It is as if it has just been blasted off Mars. It is effectively a pristine sample of Mars."
Lawrence Krauss - The Guardian
Tensions between religion and science will persist unless believers recognise that skepticism is a hallmark of science.
Outward displays of belief in God have become a proxy for trustworthiness in the US. Photograph: Matt Rourke/AP