New! Sign up for our free email newsletter.
Reference Terms
from Wikipedia, the free encyclopedia

Catalysis

In chemistry and biology, catalysis is the acceleration (increase in rate) of a chemical reaction by means of a substance, called a catalyst, that is itself not consumed by the overall reaction. A catalyst decreases the activation energy of a chemical reaction. Catalysts participate in reactions but are neither reactants nor products of the reaction they catalyze. An exception is the process of autocatalysis where the product of a reaction helps to accelerate the same reaction. They work by providing an alternative pathway for the reaction to occur, thus reducing the activation energy and increasing the reaction rate.

Related Stories
 


Health & Medicine News

March 18, 2026

Your morning coffee or tea could be quietly supporting your brain health. A long-term study found that moderate consumption of caffeinated coffee or tea was linked to an 18% lower risk of dementia and better cognitive performance over time. The ...
A critically ill 33-year-old man survived an almost unimaginable scenario—living for 48 hours without lungs—thanks to a groundbreaking surgical approach. After a severe flu-triggered infection destroyed his lungs and caused multiple organ ...
Early life stress may set the stage for long-term digestive problems by disrupting the gut-brain connection. Studies in both mice and thousands of children found links to symptoms like pain, constipation, and IBS. Scientists discovered that ...
A key Alzheimer’s drug has finally revealed its secret. Researchers discovered that lecanemab works by activating the brain’s immune cells—but only through a specific part of the antibody called the Fc fragment. This piece acts like a trigger, ...
mRNA vaccines saved millions of lives during COVID-19 but have limitations like waning immunity and complex production. Scientists are now testing a new platform called DoriVac, which uses folded DNA nanostructures to better control how the immune ...
Researchers have identified a surprising brain pattern that may help explain why people with ADHD often struggle to stay focused. Even while awake, their brains can slip into brief episodes of “sleep-like” activity during demanding tasks. These ...
A new clinical study suggests that successful root canal treatment may benefit more than just dental health. Patients treated for infected teeth showed improved blood sugar control, healthier cholesterol levels, and reduced inflammation over time. ...
A redesigned cancer immunotherapy is showing striking early results after decades of disappointment with similar drugs. Researchers engineered a more powerful CD40 agonist antibody and changed how it’s delivered—injecting it directly into tumors ...
A new UCLA Health study suggests that long-term exposure to the pesticide chlorpyrifos may dramatically raise the risk of Parkinson’s disease. Researchers found that people living in areas with sustained exposure had more than 2.5 times the ...
A clinical trial found that listening to specially designed music with auditory beat stimulation can significantly reduce anxiety. Among several listening lengths tested, a 24-minute session ...
Scientists have discovered that cells can sense far beyond the surfaces they touch. While individual cancer cells can probe about 10 microns ahead by tugging on surrounding collagen fibers, clusters of normal epithelial cells can combine forces to ...
Researchers have developed a tiny antibody that can find a common cancer protein and make tumors light up during PET scans. In tests with mice, tumors containing the protein EphA2 glowed clearly when the antibody was used. This could help doctors ...

Latest Headlines

updated 12:56 pm ET