Black-and-white microscopy image of microspheres in snake’s solid “pee”, also known as urates.
| 3 min read
Scientists know that reptiles “pee” solids, but the structure and chemistry of these wastes remained a mystery—until now.

nitrogen

Artist’s rendition of a neuron silhouetted against a glowing red background.

SNO-y Protein Levels Help Explain Why More Women Develop Alzheimer’s

Matthieu Groussin sits with three other people on stools in front of a low table, on which there are several bowls of food. Another person stands above Groussin spooning something into a bowl.

Q&A: Gathering Diverse Microbiome Samples

Rows of soybean plants with green leaves beneath a partially clouded sky with the rising sun in the background.

As Carbon Dioxide Goes Up, Plants’ Nutrient Content Declines

A mesquite tree in an arid environment

Climate Change May Favor Nitrogen-Fixing Plants

Natural sunbeams underwater through water surface in the Mediterranean sea on a seabed with neptune grass, Catalonia, Roses, Costa Brava, Spain

Marine Plant Partners with Microbes Like Terrestrial Plants Do

Infographic showing how a new bacteria species called <em>Candidatus Celerinatantimonas neptuna</em> lives in seagrass and how it provides the plant with nitrogen

Infographic: Nitrogen-Fixing Bacteria Live Inside Seagrass Roots

Photo of Romaine River in Quebec

Microbial Analysis of River Reveals Considerable Diversity

small striped mammal

Gut Microbes Help Ground Squirrels Endure Hibernation

Cicada nymph on a tree, shedding its exoskeleton

Scientists Go Down the Cicada Hole

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Kirsty Wright is searching for evidence in a missing persons investigation. She is wearing a blue shirt and glasses. Behind her is dense vegetation and police procedural tape.

How a Forensic Biologist Exposed a DNA Lab Scandal That Shook Australia

Photo of John Calhoun crouches within his rodent utopia-turned-dystopia

Universe 25 Experiment

Hands holding an older woman’s hands.

One Gene Influences 75 Percent of Alzheimer’s Disease Cases

A picture of Rohita Roy, a postdoc at Stanford University.

Postdoc Portrait: Rohita Roy

Multimedia

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From Data to Discovery: Omics in Therapeutic Innovation

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Exploring Organoids for Disease Modeling Research

February 2026

A Stubborn Gene, a Failed Experiment, and a New Path

When experiments refuse to cooperate, you try again and again. For Rafael Najmanovich, the setbacks ultimately pushed him in a new direction.

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Human-Relevant In Vitro Models Enable Predictive Drug Discovery

Advancing Drug Discovery with Complex Human In Vitro Models

Stemcell Technologies
Redefining Immunology Through Advanced Technologies

Redefining Immunology Through Advanced Technologies

Ensuring Regulatory Compliance in AAV Manufacturing with Analytical Ultracentrifugation

Ensuring Regulatory Compliance in AAV Manufacturing with Analytical Ultracentrifugation

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Maximizing Cancer Research Model Systems

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Sino Biological Expands Research Reagent Portfolio to Support Global Nipah Virus Vaccine and Diagnostic Development

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Beckman Coulter Life Sciences Partners with Automata to Accelerate AI-Ready Laboratory Automation

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Refeyn named in the Sunday Times 100 Tech list of the UK’s fastest-growing technology companies