
Climate Action
The science is clear – to limit warming to 1.5°C the world must aggressively reduce emissions and permanently remove hundreds of billions of tons of carbon dioxide from the atmosphere this century. The challenge is urgent and massive, and yet: it is also tractable.
We are funding R&D to create solutions that can safely remove CO2 at costs consistent with gigaton scale. We are championing policies that will catalyze these solutions. And we are helping to ensure that solutions are developed and deployed equitably. Our work is particularly focused on ocean removal solutions because of their enormous potential.
Program Spotlight
Ocean Alkalinity Enhancement
A philanthropic consortium, led by Additional Ventures, is proud to launch the Ocean Alkalinity Enhancement (OAE) R&D Program, an ambitious effort to accelerate understanding of OAE as a potential method to remove CO2 at large scale.

Funding Opportunities
CLOSED

Ocean Alkalinity Enhancement Engineering Award
Additional Ventures is partnering with Ocean Visions and a consortium of philanthropic funders to invite pre-proposals to develop prototypes that could enable safe, cost-efficient, and scalable OAE.
Award Amount
$750k – 1.5M per team, to be used within 18 months or less
Eligibility
Individuals, companies, or research organizations anywhere in the world are invited to apply.
CLOSED

Ocean Alkalinity Enhancement Research Award
Additional Ventures is partnering with Ocean Visions and a consortium of philanthropic funders to invite applications from scientific teams to systematically assess the conditions under which ocean alkalinity enhancement (OAE) can safely and permanently sequester atmospheric CO2 at scale.
Award Amount
At least $10 million to be utilized over five (5) years
Eligibility
Research organizations anywhere in the world (universities, national labs, other independent research institutes, including consortia of multiple organizations) are invited to apply.