Low iron could cause brain fog during menopause transition, OU study suggests
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Updates every hour. Last Updated: 16-Jun-2025 19:09 ET (16-Jun-2025 23:09 GMT/UTC)
Climate change is increasing the risk of wildfires in many regions of the world. This is due partly to specific weather conditions – known as fire weather – that facilitate the spread of wildfires. Researchers from the Helmholtz Centre for Environmental Research (UFZ) and Australian colleagues have found that fire weather seasons are increasingly overlapping between eastern Australia and western North America. The research team examined the causes of this shift and its implications for cross-border cooperation between fire services in Canada, the US, and Australia. The research was published in Earth’s Future.
Local authorities must do more to prepare communities in British Columbia for the dangers of extreme heat, according to a new research paper from Simon Fraser University.
Four years after the infamous 2021 heat dome, which killed more than 600 people in B.C. alone, the ground-breaking study found significant differences in how municipalities within the Metro Vancouver and Fraser Valley regional districts are preparing for heat events.
Two-dimensional porphyrin-based COFs show great promise for photocatalytic CO2 reduction, yet their π-π stacking often impedes active site exposure and charge transfer. Researchers developed a series of porphyrin COFs with tunably twisted linkers. The N-N-linked twisted unit in NN-Por-COF creates a remarkably undulating layered structure that enhances mass transport and exposes more active sites, while simultaneously modulating the electronic structure of cobalt-porphyrin to reduce reaction barriers. This dual structural and electronic optimization yields outstanding photocatalytic performance, achieving CO production rates of 22.38 and 3.02 mmol g−1 h−1 under pure and 10% CO2, respectively, surpassing most porphyrin-based photocatalysts.
The Atlantic Multidecadal Oscillation (AMO) — a low-frequency variability in sea surface temperature that repeats roughly every 40 to 80 years in Atlantic — impacts global climate and influences frequency and severity of extreme weather events. High-resolution models can improve simulations of AMO, but researchers did not understand how. Now, an international team has figured out why more detailed models can simulate the AMO in a way that better matches with observed data.