Farmers apply nitrogen fertilizers to crops to boost yields, feeding more people and livestock. But when there’s more fertilizer than the crop can take up, some of the excess can be converted into gaseous forms, including nitrous oxide, a greenhouse gas that traps nearly 300 times as much heat in the atmosphere as carbon dioxide. About 70% of human-caused nitrous oxide comes from agricultural soils, so it’s vital to find ways to curb those emissions.

Honeybees are essential pollinators for agriculture and natural ecosystems. Stressors like climate change, habitat loss and pesticide exposure threaten their ability to forage for pollen, a critical resource for colony survival. Researchers in ACS’ Environmental Science & Technology demonstrate that an artificial intelligence (AI)-based monitoring system combined with a computer model can link the exposure of neonicotinoid pesticides on individual honeybees to the health of the whole colony. 

A new study reveals that the Neolithic Revolution in the southern Levant may have been triggered by catastrophic wildfires and climate-driven soil erosion. Using charcoal records, isotopic data, and sediment analysis, the research identifies a natural tipping point around 8,200 years ago that forced early communities to adopt agriculture. Fertile soils formed in valley basins after hillslope degradation became hotspots for settlement and farming. The findings challenge the idea of a purely cultural or anthropogenic transition, pointing instead to climate-induced environmental collapse as a driving force.

Linking elk pregnancy to elk “foodscapes”, climate impacts on bee gut microbiomes and more from ESA’s journals.

A study published in Forest Ecosystems reveals Douglas-fir introduction have limited biodiversity impacts, showing no significant effect in 78.6% of cases, with only 9.4% negative outcomes. While canopy spiders benefit from its dense structure, arthropod diversity is reduced due to the distinct bark structure. Based on the limited studies retrieved by the review, it is reported that Douglas-fir inclusion has non-significant or neutral effects. Key knowledge gaps remain regarding bat populations and long-term soil impacts. The findings position this North American species as a viable climate-resilient option for European forestry, pending further research to establish safe implementation thresholds.