CrowdScience listener Sid is running late, and he’s turning to science to find an excuse. He and his partner Steffi in Singapore have very different attitudes to timekeeping. They wonder if this is down to their different cultural upbringings, or if they just had very different brains to start with.
Presenter Chhavi Sachdev puts her own time perception skills to the test to try to understand how subjective our sense of time can be. And we discover how the language we grow up speaking can influence the way we think about punctuality.
Presenter: Chhavi Sachdev
Producer: Emily Bird
Editor: Cathy Edwards
Production Co-ordinator: Ishmael Soriano
Studio Manager: Jackie Margerum
Sudan is facing the largest humanitarian crisis globally. As the country’s civil war enters its third year, the United Nations and Non-Governmental organisations say it civilians are continuing to pay the price, due to inaction. Humanitarians, some in the country, share their experiences.
Also, what is the International Parliamentary group known as IPAC, and is China pressurising foreign politicians in Africa to withdraw from it?
And, is there freedom of worship for Christians in a majority muslim Somalia? Find out from a Christian leader.
Presenter: Audrey Brown
Technical Producer: Francesca Dunne
Producers: Bella Hassan and Amie Liebowitz
Senior Journalist: Karnie Sharp
Editors: Andre Lombard and Alice Muthengi
American top diplomat Marco Rubio warns US will walk away from Ukraine peace talks if progress is not seen within days. Also, US strikes in Yemen reportedly kill nearly sixty people, and the Fyre Festival relit?
This week is the Christian celebration of Easter, which sent the Unexpected Elements team scrambling for egg-related stories.
First up, we find out about the rise of a vegan egg substitute.
Next, we discover how to cook the perfect boiled egg, according to science.
We then turn our attention to climate change, and find out how it is affecting the breeding patterns and nesting behaviour of sea turtles.
Plus, we are joined by Dr Luis Welbanks, who tells us about a nearby exoplanet that reeks of rotten eggs.
Finally, we delve into the science behind IVF.
All that, plus many more Unexpected Elements.
Presenter: Marnie Chesterton, with Chhavi Sachdev and Sandy Ong
Producer: Alice Lipscombe-Southwell, with Debbie Kilbride, Robbie Wojciechowski and William Hornbrook
US President Donald Trump says he's 100% sure that he'll strike a trade deal with the European Union, after hosting the Italian PM Giorgia Meloni in Washington. Also: Rico the sloth gets surgery to cure toothache.
After 60 years of doubling computer complexity every two years, can Moore’s law still predict the future power of the devices we use?
In 1965, electronics pioneer Gordon Moore was asked to predict the next ten years of progress with the then new-fangled silicon integrated circuits. He estimated, based on physics and manufacturing technologies then available what seemed remarkable: that every two years they would double in complexity, and halve in price, until 1975.
60 years on, perhaps the even more remarkable thing is that they just kept doubling.
Can Moore’s law hold into future decades? What are the next technological innovations that might keep it running?
Sri Samavedam is the vice president for silicon technologies at imec in Belgium, whose job it is to think about the practicalities of manufacturing the next generations of chips years before they become real.
Scott Aaronsen of the University of Texas is a thinker in the field of Quantum Computing – could quantum computing keep the rate of growth going? Or does it need to be thought of differently?
One of the limitations on chip miniaturisation is the dissipation of heat from conventional electronic flow. Nick Harris of Lightmatter is looking at using photons rather than electrons to carry info and logic around a circuit with lower power losses.
Stan Williams has spent much of his career thinking about new devices that could be fabricated into integrated circuits to give it all a push forward. And he tells Roland how the memristor could effectively bring the power of analogue computing to bear as we reach some of the limits of the digital age we have been living in.
Presenter: Roland Pease
Producer: Alex Mansfield and Gareth Nelson-Davies
Sudan's paramilitary Rapid Support Forces (RSF) have declared the formation of a rival government in areas under their control, will that change the course of the civil war that is now entering its third year?
Will former president of the Democratic Republic of the Congo, Joseph Kabila who is planning to return to country, help to find a solution to the conflict with M23 rebels?
Why are Kenyan ants of interest to smugglers?
Presenter: Audrey Brown
Producers: Tom Kavanagh in London, and Blessing Aderogba in Lagos
Senior Producer: Patricia Whitehorne
Technical Producer: Francesca Dunne
Editors: Alice Muthengi and Andre Lombard
US and Ukrainian officials discuss ending the Ukraine war with European allies in Paris. Also: Russia has seized thousands of homes in occupied Ukraine, and scientists find promising signs of life on a distant planet
The Trump administration is accused of "wilful disregard" of a ruling blocking the deportation of alleged gang members to El Salvador. Also: new speed climbing record set in the Swiss Alps.
In a landmark ruling, the UK Supreme Court says the legal definition of a woman refers to biological sex. Also: BBC gets rare access to a torture cell in Bangladesh, and the unexpected popularity of a slow TV moose show.