As the UK aims to going net-zero, the trade minister Liz Truss looks at the proposal of green taxes and tariffs on trade.

One of the ideas often mentioned to slow global warming is a carbon border adjustment - essentially taxing imported goods that have a high climate impact.

And it could be a step closer to being introduced in the UK, as our economics and data editor Ed Conway explains.

SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews

Follow us on Twitter: https://twitter.com/skynews

Like us on Facebook: https://www.facebook.com/skynews

Follow us on Instagram: https://www.instagram.com/skynews

For more content go to http://news.sky.com and download our apps:

Apple: https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8

Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB

Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí https://www.youtube.com/channel/skynewsespanol