Nikhil Srivastava, a young Indian mathematician, has been named winner of the prestigious 2021 Michael and Sheila Held Prize along with two others for solving long-standing questions on the Kadison-Singer problem and on Ramanujan graphs.

In the days before Joe Biden became US president, construction crews worked quickly to finish Donald Trump's wall at an iconic cross-border park overlooking the Pacific Ocean, which then-first lady Pat Nixon inaugurated in 1971 as a symbol of international friendship.

China's construction activities on "its own territory" is "normal" and is entirely a matter of sovereignty, the Chinese Foreign Ministry said here on Thursday, reacting to a report about China building a new village in Arunachal Pradesh.

A large number of people remain infected with the coronavirus in England and the rate of new infections was not dropping even 10 days into the latest stay-at-home lockdown, an ongoing government-backed study said on Thursday.

Twin suicide bombings ripped through a busy market in the Iraqi capital Thursday, killing at least 32 people and wounding dozens, officials said.

The US rejoined the World Health Organisation (WHO) in one of the first official orders of the Joe Biden presidency, reversing a key foreign policy decision his predecessor Donald Trump took last year after accusing the UN health agency of incompetence and bowing to Chinese pressure over the coronavirus pandemic.

Joe Biden on Wednesday took over the official @POTUS Twitter account of the President of the United States after his inauguration.

 "Democracy has prevailed," newly inaugurated US President Joe Biden said on Wednesday in his maiden speech as he called on Americans "to defend the truth and defeat the lies".