Why is the government's emission target 43%?

It's back to school for parliament and the government's climate change bill is a top priority. They've already introduced it to the House of Representatives, but does it have what it takes to make it into law? And why is it 43% in the first place? Follow us on Instagram and join 380,000 Australians @thedailyaus Learn more about your ad choices. Visit megaphone.fm/adchoices