EarthInvisibility cloak makes solar panels work more efficiently A new material that hides the metal grid on top of solar panels make them 9 per cent more efficient in lab tests ¿ìè¶ÌÊÓÆµ
HealthOld brains can’t hear similar sounds but a drug can change that As we age, telling tones apart gets harder – which makes learning languages difficult. A drug that restores hearing in old mice may one day improve human hearing ¿ìè¶ÌÊÓÆµ