Fertiliser has allowed farmers to grow more food to feed a growing population but it worsens climate change and often causes local pollution.
One solution could be beneath our feet, with Britain sitting on an almost limitless supply of a greener alternative.
Tom Heap descends over 1km down the Boulby Mine under the North Sea to see what it’s all about.
#Polyhalite #BoulbyMine #WoodsmithProject #Poly4 #Polysulphate #Fertiliser
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
Follow us on TikTok: https://www.tiktok.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 Daily podcast is available for free here: https://podfollow.com/skynewsdaily/
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí: https://www.youtube.com/channel/UCzG5BnqHO8oNlrPDW9CYJog
To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales