Hello and welcome to the Intelligence on Economist Radio.

I'm your host, Jason Palmer.

Every weekday we provide a fresh perspective on the events shaping your world.

The mistaken belief that rhinoceros horn in effect health or virility has been the animal's single biggest threat.

But what if the illicit market for rhinohorn could be flooded with a convincing fake?

Scientists are on the case.

And it's no surprise that eating meat is bad for the planet.

But how bad?

We look into a new study that crunches the numbers.

Turns out there are some environmentally smart choices, even for those not ready to give up meat altogether.

But first...

Iran is being shaken by protests after its sanctioned squeezed government cut petrol subsidies.

Despite a widespread internet blackout, activists have managed to upload some videos of demonstrations and violence that they say are happening across the country.

The protests began nearly a week ago.

Many Iranians rely on cheap petrol to get to work.

Iran sits on fast oil deposits and affordable fuel can feel almost like a birthright.

Supreme Leader Ayatollah Ali Khamanai has spoken publicly, saying the protests were a security matter, not a popular movement.

What I want to say is that no one should help these hooligans, no wise and deserving person interested in his own country, interested in his comfortable life should help them.

They are the hooligans and not the ordinary people.

He and other Iranian officials claim the protests have been dealt with.

But the internet blackout and reports of demonstrations continue.

We know that Iran is suffering its greatest unrest at least for two years and possibly for a decade.

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