Anthropogenic activities are raising carbon dioxide (CO2) levels in the atmosphere, which may adversely affect human physiology. Analysis of serum bicarbonate, calcium, and phosphorus levels from the U.S. National Health and Nutrition Examination Survey (NHANES) from 1999 to 2020 provides insights into the potential impact of elevated CO2 on human health.

More than 99% of evaluated coastal hazard impact assessments inadequately handled sea-level and land elevation data. This mismanagement leads to incorrect judgments of sea level relative to the coast, affecting the reliability of assessments related to sea-level rise and hazards.

A hothouse Earth trajectory poses significant risks to global ecosystems and human societies. Research emphasizes the urgency of mitigating climate change to prevent irreversible damage to the planet's climate system.