Eskom is making 291MW of green, solar photovoltaic energy available to large power users.

The productivity and customer service benefits are huge – especially for businesses that handle high volumes of calls.

Hot summer also causing trees to shed their leaves as concerns raised over ‘food gap’ for wildlife in autumn

Autumn is the “season of mists and mellow fruitfulness”, according to the poet John Keats – but anyone hoping for a glut of blackberries this September may be sorely disappointed.

In many parts of the UK brambles have been bursting with fruit since mid-summer, with some now bearing only...

News that MTN Group is facing an investigation by a US grand jury sent its shares tumbling 9% on Monday.

The children’s commissioner for England tells the BBC virtual private networks are a “loophole that needs closing.

Amid collapse of global pollution treaty, scientists highlight environmental factors causing fertility crisis

Action must be taken to curb the use of plastic additives linked to plummeting sperm counts, a leading reproductive scientist has warned, as splits over chemical regulation contributed to the collapse of a crucial treaty on plastic pollution.

Across the world, sperm counts have been...

After three years of negotiating, talks over a global plastics treaty came to an end in Geneva last week with no agreement in place. So why has it been so difficult to get countries to agree to cut plastic production? Madeleine Finlay hears from Karen McVeigh, a senior reporter for Guardian Seascapes, about a particularly damaging form of plastic pollution causing devastation off the coast of...

The announcement comes hours after reports that the White House is in talks over taking a 10% stake in Intel.

Competition from rivals, especially in the prepaid segment, is piling the pressure on MTN South Africa.

The solutions to today’s teasers

Earlier today I set you three puzzles from Tasty Japanese Morsels in Recreational Mathematics. Here they are again with solutions.

1. Squid game

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Results of studying cocoa bean fermentation in Colombia could pave way to manipulate flavour, say researchers

Whether you enjoy an aromatic bar with notes of caramel or something less fancy, chocolate can have many tastes. Now researchers say they have shed fresh light on a key ingredient that could open the door to new flavours.

They claim to have unpicked how and why the bacteria and fungi...

This ‘really fun space rock’ is only the third interstellar object to be observed. Where is it heading and can stargazers see it?

An object that came from outside our solar system is hurtling towards the sun at roughly 61km (38 miles) a second.

First detected in July, this visitor from outer space – known as 3I/Atlas – is only the third known interstellar object to have been observed, after...

MTN Group has disclosed that it is now the subject of a grand jury investigation by the US department of justice.

The leak has led to backlash amid reports the tech giant’s legal staff approved the conversations.

MTN Group has swung to a half-year profit as economic conditions and forex rates showed improved stability.

Brain food from the land of the rising sums

Japan is a world puzzle superpower. Its grid logic puzzles – like Sudoku, Kakuro, KenKen and many more – are played across the world by millions every day.

The country also has its own culture of mathematical puzzles, nurtured by the Academy of Recreational Mathematics, Japan, which was founded in 1979.

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The celestial triangle will take place in the constellation of Gemini, beside bright stars Castor and Pollux

There is an exquisite gathering of celestial objects to look out for this week when a beautifully slender crescent moon forms a triangle with the planets Jupiter and Venus, close to the bright stars Castor and Pollux.

The chart shows the view looking east-north-east from London at 04:00...