HealthWhy the brain's microbiome could hold the key to curing Alzheimer's The surprising discovery that your brain has its own microbiome is raising an intriguing possibility – that some dementias might be reversible Features
EnvironmentThe gold hydrogen rush: Does Earth contain near-limitless clean fuel? Prospectors around the world are scrambling to find reserves of "gold hydrogen", a naturally occurring fuel that burns without producing carbon dioxide. But how much is really out there and how easy is it to tap into? Features