Vacant rooftops across all major cities around the world are a dime a dozen. Their concrete surfaces aren't just a waste of space in a highly urbanised world, but also contribute to the heat island effect that afflicts these built-up areas. So why not farm on them?
By Sindy Peters 23 Oct 2019
If creepy-crawlies make you squeamish, then Gourmet Grubb's ice-cream, which is made using insects, may not be high up on your list of things to try...
By Lauren Hartzenberg 2 Oct 2018