Texas and California face poor air quality, with ozone and particle pollution triggering alerts.

Asthma is a form of bronchial disorder caused by inflammation of the bronchi. It is characterized by spasmodic contraction of airway smooth muscle, difficulty breathing, wheezing and coughing. The ...

Feb. 23, 2026 Scientists have created a blood test that can estimate when Alzheimer’s symptoms are likely to begin. By measuring a protein called p-tau217, the model predicts symptom onset within ...