LONDON (Reuters) - Accenture is challenging a defining feature of blockchain, its immutability, by patenting a system that will allow data processed and stored using the technology to be edited.

LONDON, Sept 20 (Reuters) - Britain's Prince William has spoken of "very sad, dark moments" he has faced as an air ambulance pilot in an online video and photo report looking at the emergency team he works with.

LONDON (Reuters) - A blockchain revolution to simplify stock and bond settlement won't happen anytime soon, though change to today's "cat's cradle" of costly intermediaries is unstoppable, a senior Bank of England official said on Tuesday.

CAPE TOWN (Reuters) - South African anti-apartheid activist and veteran cleric, Archbishop Desmond Tutu, was responding well to a new course of antibiotics, his daughter said on Tuesday, following social media reports her father had died.

WASHINGTON (Reuters) - One in four registered voters in the United States live in areas that will use electronic voting machines that do not produce a paper backup in the November presidential election despite concerns that they are vulnerable to tampering and malfunctions, according to a Reuters analysis.

LONDON (Reuters) - ARM, the British chip designer powering the global mobile phone industry, launched a new processor on Tuesday for driverless cars, seeking to secure its place at the heart of the burgeoning industry.

(Reuters) - Canada's Electrovaya Inc said on Tuesday it signed an agreement to supply lithium-ion batteries for electric vehicles to an original equipment maker, its second such deal with a NYSE-listed Fortune 1000 company.

(Reuters) - Online used-car retailer Vroom raised $50 million in a Series E funding round from existing and new investors, bringing the total funding to $218 million.

WASHINGTON, Sept 20 (Reuters) - One in four registered voters in the United States live in areas that will use electronic voting machines that do not produce a paper backup in the November presidential election despite concerns that they are vulnerable to tampering and malfunctions, according to a Reuters analysis.