Vertical farming - growing plants without soil in huge controlled environments - has huge potential to support traditional agriculture but won’t ever replace it.
A vote for Khan appears potentially more readily transferable to the other main candidates than a vote for Hall.
West Bank: an IDF soldier stands next to a Star of David and Israeli flag outside the illegal settler outpost of Evyatar.
Eddie Gerald / Alamy Stock Photo
Qing Wang, Warwick Business School, University of Warwick
Bernard Arnault’s five children are all involved in the luxury goods behemoth he founded - but what are the benefits and risks of keeping it in the family?
The new generation of artificial sweeteners was meant to be less harmful than the previous generation. A new study suggests they might be just as harmful.
An exciting new experiment is being set up at Yale university in the US.
A protester holds a placard with a photo of late US airman Aaron Bushnell, who died after setting himself on fire outside the Israeli embassy in Washington DC.
Robert Perry / EPA
It is difficult to distinguish between elephant and mammoth ivory.
Reporting from Gaza is extremely restricted, with international journalists only being allowed in when accompanied by the Israeli military.
Majority World CIC /Alamy
First past the post tends to deliver the winning party more seats in parliament than they’d get under a truly proportional voting system – but this year is off the charts.