Apple has warned it is seeking alternative memory chip suppliers as "very significant" constraints threaten future sales of its key devices.
Originally published at news.sky.com.
Hungary's prime minister has warned the country is facing the "most critical five days ahead" with its sole nuclear power plant expected to be shut down this week due to record-low water levels of the River Danube.
Heat health alerts have been issued for most of England as temperatures are forecast to reach the mid-30s centigrade.
Australia has defended its world-first ban on social media for under-16s after a study found there had been little drop in use months after the ban took effect.