There are lots of reasons people go vegan; sometimes they don't like meat or killing animals, others do it for health reasons but more and more are ditching meat because of climate change.
Veganism has become really popular in recent years. Veganuary - where people go vegan for a month - is now an annual event while plenty of people are getting angry about it - particularly vegan sausage rolls.
What's certain is that veganism is now a mainstream diet and is here to stay. But the amount of meat we eat globally is going up, which is having an increasing impact on the environment.
So do we all need to go vegan and will it actually help prevent climate change?
(Source: Channel 4 News YouTube channel)