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Science commentator Laurie Winkless joins Kathryn to talk about how the Earth is trapping more heat in the atmosphere and what happens when its energy balance is out of alignment.
Chemotherapy has saved countless lives, but it can be unpleasant, and up to 20 percent of people don't respond to the drugs.
Now a genomic test has been developed to see which patients might experience a bad reaction to the most commonly-used chemo drugs.
And Australia's bogong moth makes an epic journey south each year - now scientists have found they use stars to navigate.
Laurie Winkless is a physicist and science writer
