A child holds one of her baby teeth that fell out between her thumbs while smiling with a gap in her teeth.
| 5 min read
Sharks and crocodiles grow endless sets of teeth, but humans only get two. Explore how teeth develop and how regenerative dentistry may one day help grow teeth back.

teeth

Image of not-to-scale renderings of the skulls of various primate species

Surface Area of Tooth Roots Predicts Primate Body Size

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Scratchy Scalps Help Glue Together Pieces of an Ancient Past

Fossils of African Fauna

African, Arabian Mammals Didn’t Escape Grande Coupure Extinction

Megalodon from prehistoric times scene 3D illustration

Classroom Science Leads to Revision of Megalodon’s Size

Image of the Day: Bear Sinuses

Image of the Day: Tiny Dinosaur

Image of the Day: Fish that Eat Fish

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Image of the Day: Famine Victim Teeth

Snapshot of the repairing experiment on a human tooth

Image of the Day: Enamel Repair

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Universe 25 Experiment

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q.e.d: An AI Tool for Smarter Manuscript Review

An enveloped virus forms.

Where Do Viruses Come From?

A depiction of gut microbes in different colors inside the intestines.

Criticism of Autism-Gut Microbiome Research Sparks Pushback

Multimedia

Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

Merck
Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

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December digest cover image of a wooden sculpture comprised of multiple wooden neurons that form a seahorse.
December 2025, Issue 1

Wooden Neurons: An Artistic Vision of the Brain

A neurobiologist, who loves the morphology of cells, turns these shapes into works of art made from wood.

View this Issue
Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

Merck
Stacks of cell culture dishes, plates, and flasks with pink cell culture medium on a white background.

Driving Innovation with Cell Culture Essentials

MilliporeSigma purple logo
Abstract wireframe sphere with colorful dots and connecting lines representing the complex cellular and molecular interactions within the tumor microenvironment.

Exploring the Inflammatory Tumor Microenvironment 

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An image of a DNA sequencing spectrum with a radial blur filter applied.

A Comprehensive Guide to Next-Generation Sequencing

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Products

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BRANDTECH® Scientific Announces Strategic Partnership with Copia Scientific to Strengthen Sales and Service of the BRAND® Liquid Handling Station (LHS) 

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Enter Our 2026 Top Innovations Contest

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Biotium Expands Tyramide Signal Amplification Portfolio with Brighter and More Stable Dyes for Enhanced Spatial Imaging

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LabVantage Solutions Awarded $22.3 Million U.S Customs and Border Protection Contract to Deliver Next-Generation Forensic LIMS