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Mars’ south polar cap, as seen from Mars Global Surveyor. Buried beneath, we now know, is a lake of liquid water. NASA/JPL/MSSS

Discovered: a huge liquid water lake beneath the southern pole of Mars

Researchers have found evidence of a large lake of salty water, buried 1.5 kilometres beneath the southern polar ice cap on Mars. So what does that mean for life on the red planet?
Dingoes are usually solitary, but can forage in groups near human settlements where food is abundant. Klaasmer/Wikimedia Commons

Why do dingoes attack people, and how can we prevent it?

An attack on a WA mine worker has highlighted the danger of wild dingoes, particularly when attracted by humans’ food - one of the factors that can make an attack by wild predators much more likely.
SIM cards contain a computer chip that can do some simple mathematics and store some data. Flickr/jbdodane

Curious Kids: How do SIM cards make a phone work?

SIM cards link accounts to handsets. They keep communications private. They store messages. Although small and simple, they are a big part of modern mobile phone systems.
Melburnians admire the first primrose to arrive in the colony, transported by a Wardian case, in Edward Hopley’s A Primrose from England, circa 1855. Bendigo Art Gallery, Gift of Mr and Mrs Leonard Lansell 1964.

How the Wardian case revolutionised the plant trade – and Australian gardens

A wood and glass case invented in the early 19th-century transformed the movement of plants around the world. In Melbourne, several thousand people greeted a primrose on its arrival from England.
The gulf between what Domino’s CEO Don Meij earned in 2017, A$36.8 million, and those who deliver the pizzas is extraordinary, so is the CEO worth that much? Paul Miller/AAP

CEO pay is more about white male entitlement than value for money

The evidence suggests the impact of CEOs on company performance isn’t enough to justify their sky-high pay, which is really based more on a culture of power and privilege.