Wall Street hits new highs on US-China trade deal hopes; Argentina’s currency, stocks and government bonds surge after Javier Milei’s far-right party wins election
While the European countries have brought their spending under control, the US president’s tax cuts and defence spending will lead to increased borrowing
Editorial: Electronic implants are helping people see again. Their promise is profound, but so are the risks. Progress must be guided by ethics and accessibility
From infrared saunas to LED beauty masks, a billion-dollar market has grown around the healing power of light. But where does the science end and the hype begin?