BBC

His wealth is now estimated to be $171bn (£137bn), having made billions during the pandemic.

A report says a rise in animal-to-human diseases will continue without urgent action.

Authorities in China have stepped up precautions after a reports of a suspected case.

Robotic scientists could speed up scientific discovery, while human scientists work from home, developers say.

A rural herdsman tested positive for the infection, which can be treated with antibiotics.

An Electron rocket launched from New Zealand's North Island fails in flight, destroying its satellites.

The PM is accused of inventing an allegation that wildlife rules are holding back house-building.

The UK helps rescue company from bankruptcy as part of a plan to replace the EU's Galileo sat-nav system.

Wastewater analysis could provide localised Covid-19 test results much earlier than at present.

The launch of Nasa's Mars rover Perseverance is delayed again to 30 July at the earliest.

This early peak indicates a potentially devastating dry season ahead - perhaps even worse than 2019.

Phil Evans, formerly at the UK Met Office, will be the new director general of Eumetsat.

Some 350 elephant carcasses have been spotted in Botswana's Okavango Delta since May.

Astronomers have found a previously unseen type of object circling a distant star.

British firms fail to win leading roles in the expansion of the Copernicus Earth observation project.

A Swedish study found twice as many people had protective T-cells as tested positive for antibodies.

The government says it wants to make immigration "easy and quick" for researchers and innovators.

Can hydrogen - a relatively clean source of fuel - help power the economy of the future?

Britain could see temperatures up to 40C every few years by 2100 if carbon emissions stay very high.

A huge star has disappeared - did it become a black hole?