Prince William announced the winners on Friday 2nd Dec at an awards ceremony in Boston in the US.
"I believe that the Earthshot solutions you have seen this evening prove we can overcome our planet's greatest challenges," Prince William said during the ceremony.
"By supporting and scaling them we can change our future," he said.
This is the second set of Earthshot Prizes awarded, after the first ever awards last year. The prize's name refers to the "Moonshot" ambition of 1960s America by then-President John F Kennedy, who pledged to get a man on the Moon within a decade.
Five Earthshot Prizes of £1m ($1.2m) are being awarded each year until 2030 in support of environmental innovation projects for the future. Nominations for the 2023 prize open up on 5 December.
William and Catherine handed out awards to the five winners during a star-studded ceremony in Boston on Friday
Who are the winners?
Clean Our Air:
- Mukuru Clean Stoves, Kenya: Kenya's Mukuru Clean Stoves is a female-founded business with mostly female staff. They produce stoves that are fired by processed biomass made from charcoal, wood and sugarcane instead of solid fuels, which can lead to air pollution and accidents that claim four million lives each year, the Earthshot Prize said.
Protect and Restore Nature:
- Kheyti, India: In India, Kaushik Kappagantulu's Greenhouse-in-a-Box helps small-hold farmers protect their crops from extreme weather and pests, in a country that has been severely impacted by climate change.
Build a Waste-free World:
- Notpla, United Kingdom: A waste-free solution from the UK was also among the winners, where Pierre Paslier and Rodrigo Garcia Gonzalez have been able to create natural, bio-degradable plastic made out of seaweed. The company made more than one million takeaway food boxes for the food delivery platform Just Eat this year. More on the UK winner here
Revive Our Oceans:
- Australia: The Indigenous Women of the Great Barrier Reef in Australia were chosen for a programme that has trained over 60 women in both traditional and digital ocean conservation methods.
Fix Our Climate:
- 44.01, Oman: In Oman, Talal Hasan's project 44.01 promises to turn carbon dioxide into peridotite, a rock that is found in abundance both in Oman and globally, including the US, Europe and Asia. It offers a low-cost and safe alternative to traditional methods of storing carbon, which include burying it underground in disused oil wells.
extracted from the BBC website - read more here