Food allergy symptoms can start quickly after eating and may last from minutes to a couple of days. Seasonal allergy symptoms can last for weeks or even months if exposure to the allergen continues.

Adam covers home improvements and mobile networks, splitting his time investigating topics from bathrooms to phone contracts. He was shortlisted at the BSME Talent Awards 2024. O2 is one of the big ...

A fever higher than 100.4°F after an injection is a sign you should get medical help right away. It could mean there's an infection from a contaminated needle. A fever with chills is especially ...

A reaction mechanism is a sequence of elementary reactions that can explain how an overall chemical reaction proceeds. Direct conversion of carboxylic acids to nitriles is desirable but ...

Reaction kinetics and dynamics refers to the study of why, how and how fast chemical processes take place. Chemists seek to understand the details of change at the molecular and quantum level and how ...

Fritz-Haber-Institut der Max-Planck-Gesellschaft, Department of Chemical Physics, Faradayweg 4-6, 14195 Berlin, Germany, and National Chemical Laboratory, Catalysis Division, Pune 411 008, India ...

In 1942, the Manhattan Project needed to create a chain reaction—a crucial step toward proving that it would be possible to make an atomic bomb. The scientists achieved this sustained nuclear reaction ...