A red male cardinal and a brownish female sit on a branch in front of a green background.
| 10+ min read
Animals across the tree of life have developed a mind-boggling variety of ways to become male or female.

development

This is an image of a bioluminescent from gene expression reporter in stem cells from a rhinoceros.

A Stem Cell Zoo Reveals Surprising Differences in Embryogenesis

Modeling Human Disease and Development with Organoids

Modeling Human Disease and Development with Organoids

Chromosome with gold band

Immunity Genes May Play a Role in Down Syndrome

A nine-banded armadillo walking on dry grass.

Leprosy Bacterium Rejuvenates Armadillos’ Livers

An iPhone screen with the app icons for Twitter and Mastodon side by side. Other apps are arranged in rows around them.

What’s the Future of Science Twitter?

illustration of virus particles and DNA strands

Ancient Viral DNA Plays a Role in Human Disease and Development

pregnant belly clad in hospital gown with IV line going into hand

Registry Review Casts Doubt on Causal Link Between Maternal Infection and Autism

Pink rat pups piled on top of each other.

Rat Sperm Generated from Stem Cells

Photo of Junyue Cao

Junyue Cao Applies Novel Approaches to Aging and Disease

Image of an abstract fractal blue and green sea shell.

Cell Chirality Offers Clues to the Mystery of Body Asymmetry

Illustration of fibers in a cell twisting

Infographic: The Emergence of Chirality in the Cell Cytoskeleton

Photo of older woman dressed in blue smiling and looking at the camera

Cancer Researcher Beatrice Mintz Dies at 100

An APP-knockout neuron (right) shows extended axonal and reduced dendritic growth compared with a normal mouse neuron (left). Scale bar 50 µm.

Amyloid Precursor Protein Linked to Brain Development Mechanisms

One white mouse with red eyes runs on a blue exercise wheel, while another mouse stands with front paws on the wheel

Serious Infections Linked to Autism: Study

Infographic: Maternal Microbiota Has Lasting Effects on Offspring

The Role of Mom’s Microbes During Pregnancy

Photo of newborn mouse pups

Retinal Activity Prepares Blind Newborn Mice for Vision

Human-Monkey Chimeras Shed Light on Development

Siobhán Brady Uses Big Data to Investigate Plant Development

Action at a Distance, Circa Early 1950s

Trending

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

Universe 25 Experiment

Torso of a slim white woman

Bellybutton Bugs

Colorful image of the outline of a person (navy) with the gastrointestinal tract highlighted (pink). There are images of microbes surrounding the person.

Childhood Exposure to Bacterial Toxin Tied to Early-Onset Colorectal Cancer

A brown-shelled snail with green and white striped eye stalks on the petals of a yellow tiger lily.

How Tiny Organisms Control Minds, Create Zombies, and Shape Ecosystems

Multimedia

Faster Fluid Measurements for Formulation Development

Meet Honeybun and Breeze Through Viscometry in Formulation Development

Unchained Labs
The Future of CRISPR

The Future of CRISPR

Image of a woman in a microbiology lab whose hair is caught on fire from a Bunsen burner.
April 1, 2025, Issue 1

Bunsen Burners and Bad Hair Days

Lab safety rules dictate that one must tie back long hair. Rosemarie Hansen learned the hard way when an open flame turned her locks into a lesson.

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Faster Fluid Measurements for Formulation Development

Meet Honeybun and Breeze Through Viscometry in Formulation Development

Unchained Labs
Conceptual image of biochemical laboratory sample preparation showing glassware and chemical formulas in the foreground and a scientist holding a pipette in the background.

Taking the Guesswork Out of Quality Control Standards

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An illustration of PFAS bubbles in front of a blue sky with clouds.

PFAS: The Forever Chemicals

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Unlocking the Unattainable in Gene Construction

Unlocking the Unattainable in Gene Construction

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Singleron Biotechnologies and Hamilton Bonaduz AG Announce the Launch of Tensor to Advance Single Cell Sequencing Automation

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Zymo Research Launches Research Grant to Empower Mapping the RNome