Por sessenta e seis milhões de anos, a Terra vem esfriando em silêncio, e a ciência finalmente encontrou um dos maestros dessa transformação não nos céus, mas nas profundezas dos oceanos. Uma pesquisa internacional liderada pela Universidade de Southampton revela que a queda de mais de 50% na concentração de cálcio dissolvido no mar ao longo do Cenozoico alterou profundamente o ciclo do carbono, reduzindo o CO₂ atmosférico e resfriando o planeta entre 15 e 20 graus Celsius desde a extinção dos dinossauros. O oceano, longe de ser uma vítima passiva das mudanças climáticas, emerge como um termos
O GLOBO
· Jan 27, 2026
· environment
· 2 min read
High
Sourcing: Verified
Ocean chemistry shift explains Earth's 66-million-year cooling after dinosaurs
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Climate & Environment
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Bias & Framing
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Geopolitical Impact
🌎
Scientific discovery about ocean calcium decline causing 66-million-year cooling has no direct geopolitical implications; purely paleoclimatic research with no current international relations impact.
Escalation Risk
low
Confidence
HIGH
No power dynamics affected. This is historical climate science with no bearing on contemporary geopolitical competition or alliances.
Economic Lens
📈
Ocean calcium decline over 66 million years altered marine carbon cycling, enabling atmospheric CO₂ reduction and 15-20°C global cooling. This paleoclimate discovery has limited immediate economic impact but informs long-term climate policy.
Market Signal
neutral
Confidence
MED
Climate science and research
Environmental policy and regulation
Renewable energy
Agriculture and food production
Insurance and risk management
No direct immediate consumer impact. Long-term implications: strengthens scientific basis for climate action policies that may affect energy costs, food prices, and insurance premiums through regulatory changes addressing climate change mitigation.
Reinforces scientific consensus on ocean-climate interactions, potentially influencing carbon pricing mechanisms, marine conservation policies, and climate adaptation strategies. May support arguments for stricter CO₂ emission regulations and ocean protection measures. Could inform geoengineering discussions regarding ocean chemistry manipulation.