Home • News & Impact • Ask MIT Climate: How do we know how much CO2 was in the atmosphere hundreds of years ago? Ask MIT Climate: How do we know how much CO2 was in the atmosphere hundreds of years ago? MIT Climate Portal • April 23, 2024 Categories: Climate, Faculty, Research Learn how scientists can measure and model historical CO2 in the atmosphere at the MIT Climate Portal. Related News Explore All News How do we know what the Earth’s climate was like millions of years ago? March 21, 2025 Categories: Climate, Faculty Inside a new quest to save the “doomsday glacier” with Brent Minchew March 21, 2025 Categories: Climate, Faculty, Health of the Planet, In the Media TIL Climate Podcast: Hasn’t the climate changed before? March 6, 2025 Categories: Climate, Faculty
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