Learn more about eLife assessments Blood flow to the brain is a sensitive marker of neuronal activity as well as of a number of diseases, including stroke, tumours and neurodegenerative conditions.

Start-ups need both agility and direction. by David J. Collis Strategy and entrepreneurship are often viewed as polar opposites. Strategy is seen as the pursuit of a clearly defined path—one ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Yarilet Perez is an experienced multimedia journalist and fact-checker with a Master of ...