fetal stem cells, evolution
In Canada, Signs of Life Nearly 4 Billion Years Old
In Canada, Signs of Life Nearly 4 Billion Years Old
Ashley P. Taylor | Sep 28, 2017
Embedded within 3.95-billion-year-old rock, scientists have found graphite with a carbon signature that indicates biological activity.
Coastal Critters Make Epic Voyages After 2011 Tsunami
Coastal Critters Make Epic Voyages After 2011 Tsunami
Ashley Yeager | Sep 28, 2017
Marine species survived rafting thousands of kilometers on debris swept into the water by the giant wave, scientists say.
How Poison Frogs Avoid Poisoning Themselves
How Poison Frogs Avoid Poisoning Themselves
Abby Olena | Sep 21, 2017
Amphibians resist their own chemical defenses with amino acid modifications in the sequence for a target receptor.
Second Chance for Lost Galapagos Tortoises?
Second Chance for Lost Galapagos Tortoises?
Bob Grant | Sep 14, 2017
Researchers are trying to recreate an extinct species of the lumbering reptiles by breeding closely related species that contain traces of the lost lineage’s DNA.
Sea Anemones Illuminate the Evolution of Embryo Development
Sea Anemones Illuminate the Evolution of Embryo Development
Abby Olena | Sep 11, 2017
A study of a simple marine animal suggests that the common ancestor of cnidarians and bilaterians may have had three germ layers instead of two.
Mongolian Dinosaurs and the Poaching Problem
Mongolian Dinosaurs and the Poaching Problem
David Moscato | Sep 8, 2017
High-profile cases of poached fossils shine a light on the black market for paleontological specimens—and how scientists and governments are trying to stop it.
Fingerprints of Ongoing Human Evolution Found
Fingerprints of Ongoing Human Evolution Found
Shawna Williams | Sep 5, 2017
Genetic variants in Alzheimer’s- and smoking-related genes appear to be under selection pressure, according to a study comparing the genomes of old and young participants.
Global Patterns of Human Epigenetic Variation
Global Patterns of Human Epigenetic Variation
Ashley Yeager | Aug 28, 2017
A study of five far-flung human populations gives clues to adaptations to environmental pressures.
Pollution Drives Marine Reptile Color Change
Pollution Drives Marine Reptile Color Change
Bob Grant | Aug 11, 2017
The turtle-headed sea snake is losing its stripes, and researchers suggest that the change reflects adaptation to fouled oceans.
Genomic Analysis Leaves Tardigrade Phylogeny Unclear
Genomic Analysis Leaves Tardigrade Phylogeny Unclear
Abby Olena | Jul 27, 2017
The genomes of two species of water bears reveal clues about how they persist in extreme conditions, yet don’t resolve the animals’ debated evolutionary story.