Climate change is one of the most pressing challenges facing humanity. To combat its potentially catastrophic effects, scientists are searching for new technologies that could help the world reach carbon neutrality. One potential solution that is drawing growing attention is to capture and store carbon dioxide (CO2) emissions in the form of hydrates under ocean floor sediments, kept in place by the natural pressure created by the weight of the seawater above. A major question, however, has been how stable this stored CO2 would be for the extended periods of storage required to keep the carbon in place and out of the atmosphere. A research team has shown that CO2 hydrates, under the ocean's cold and high-pressure environment, can remain stable in oceanic sediments for up to 30 days. Going forward, the team says, the same process can be used to validate the stability of CO2 hydrates for much longer periods.