Shockingly Simple: How Farmland Could Absorb an Extra 2 Billion Tonnes of CO2 From the Atmosphere Each Year SciTechDailyStudy: CO2 levels likely to be higher than at any time in last 3.3 million years - Republic World Republic WorldBy 2025, CO2 levels in the atmosphere will be higher than at any time in the last 3.3 million years Tech ExploristBy 2025, Earth's CO2 Levels Will Reach All-Time High In Past 3.3 Million Years India TimesWhat Index Fossils Can Tell Us of Human Survivability – If We Let Them The WireView Full Coverage on Google News