2022's 'Earthshot Prizes' Recognize Five Innovative Responses to Climate Change

"Childhood friends in Oman who figured out how to turn carbon dioxide into rock are among five winners chosen for the Prince of Wales's prestigious Earthshot Prize," reports the BBC:

The annual awards were created by Prince William to fund projects that aim to save the planet. Each winner will receive £1m ($1.2m) to develop their innovation.... "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.

1,500 projects were nominated, according to the event's web site. Here's the five winners:

A Kenya-based company producing stoves powered by processed biomass (made from charcoal, wood and sugarcane) that "burns cleaner, creating 90% less pollution than an open fire," while cutting fuel costs in half.
The Indian startup behind Greenhouse-in-a-box. "Plants in the greenhouse require 98% less water than those outdoors and yields are seven-times higher," explains the site, while the greenhouses themselves are 90% cheaper than a standard greenhouse, "more than doubling farmers' incomes [while] using less water and fewer pesticides."
A Queensland-based program to expand the network of rangers using drones to monitor reefs and wildfires while sharing information and innovative ideas.
London-based start-up Notpla, which created a plastic alternative made from seaweed and plants that's entirely biodegradable. (The seaweed used in its production also captures carbon twenty-times faster than trees.)
The company 44.01 removes CO2 permanently by mineralising it in peridotite, accelerating the natural process by pumping carbonated water into peridotite underground. (Unlike carbon storage, "mineralizing" CO2 removes it forever, making the process safer, cost-effective, and scalable.)

Five prizes will be awarded each year until 2030.

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