How has Ethiopia changed thirty years after the devastating famine?

Thirty years ago the BBC broadcast the first television reports of a devastating famine in Ethiopia. Up to a million people died in the disaster. Those reports prompted a huge international response.The BBC's Mike Wooldridge was part of the team in Ethiopia back then, and he's returned to Tigrai in Northern Ethiopia to see how things have changed, and find out if the threat of famine has been lifted.