由于气候变化,过敏季节正在恶化,30年内花粉含量上升21%。 Allergy seasons are worsening due to climate change, with pollen levels up 21% over 30 years.

根据最近的研究,由于气候变化和碳排放的增加,过敏季节越来越长和更加严重。 Allergy seasons are getting longer and more severe due to climate change and increased carbon emissions, according to recent studies. 在过去三十年中,整个北美洲的花粉浓度上升至21%,导致更长期和强烈的过敏症状。 Pollen concentrations have risen up to 21% across North America over the past three decades, leading to more prolonged and intense allergy symptoms. 温度变暖和二氧化碳水平升高导致植物生长季节较长,并产生更多的花粉,这可能导致未来过敏病例增加。 Warmer temperatures and higher carbon dioxide levels are causing plants to have longer growing seasons and produce more pollen, which can lead to increased allergy cases in the future.