Laboratory experiments are controlled empirical methods conducted in artificial or semi-artificial settings to isolate, manipulate, and measure specific variables under reproducible conditions. They typically involve systematic variation of one or more independent variables while holding extraneous factors constant, enabling causal inference about their effects on dependent variables. Experimental designs may include control groups, randomization, blinding, and standardized protocols to minimize bias and confounding. Laboratory experiments are widely used across natural and social sciences to test hypotheses, validate theoretical models, calibrate instruments, and generate high-precision data, often serving as a precursor to field studies or in vivo applications where environmental control is more limited.
Three years ago, Penn Vet researchers reported a major breakthrough in equine assisted reproduction. Katrin Hinrichs, Harry Werner Endowed Professor of Equine Medicine, and colleagues developed a technique that would allow ...
Veterinary medicine
13 hours ago
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Thyme, rosemary, and lavender have long been associated with natural medicine. Today, however, these aromatic plants are increasingly being studied by researchers. "In an era of ever-increasing microbial resistance to antibiotics, ...
Cell & Microbiology
Jan 28, 2026
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How many tiny pieces of plastic are currently inside your body? A series of headline-grabbing studies in the last few years have claimed to have found microplastics throughout human bodies—inside blood, organs and even ...
Environment
Jan 27, 2026
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Through new experiments, researchers in Japan and Germany have recreated the chemical conditions found in the subsurface ocean of Saturn's moon, Enceladus. Published in Icarus, the results show that these conditions can readily ...
Under glaring laboratory lights, a research assistant extends his forearm and carefully inverts a mesh-topped container onto his skin to allow a wriggling mass of bed bugs to feed on his blood, all in the name of science.
Other
Nov 25, 2025
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People hunting for Bigfoot use sophisticated techniques for collecting and validating evidence, drawing on scientific methods to try and prove its existence, research shows.
Paleontology & Fossils
Nov 20, 2025
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Humanity's drive to explore has taken us across the solar system, with astronaut boots, various landers and rovers' wheels exploring the surfaces of several different planetary bodies. These environments are generally hostile ...
Space Exploration
Oct 21, 2025
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McGill University researchers have developed a novel method to replicate four types of microplastics commonly found in the environment, providing researchers with a standardized approach to study their toxic effects.
Environment
Sep 3, 2025
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Beef is growing in the Petri dishes of ETH professor Ori Bar-Nur, an expert in regenerative and muscle biology. However, he hasn't yet tasted the cultivated meat because human consumption requires official approval in Switzerland. ...
Cell & Microbiology
Jul 29, 2025
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In life science research involving cells, experiments are increasingly being conducted using robots. However, the impact of experimental parameters set for robots, such as the flow rate for aspirating and dispensing liquids ...
Biotechnology
Jul 18, 2025
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