Amazon.com reported better-than-expected earnings in the second quarter and forecast more of the same in the current period, igniting investor optimism.

Using observations spanning a period of four years, a team of researchers from Italy found evidence of a large lake of salty water, buried 1.5km beneath Mars’s southern polar cap. But does it contain life?

In this episode of the podcast, Duncan McLeod interviews Jan Hnizdo, chief financial officer of Africa’s largest data centre operator, Teraco Data Environments.