Single-Celled Organism Appears to Make Decisions
Single-Celled Organism Appears to Make Decisions
The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.
Single-Celled Organism Appears to Make Decisions
Single-Celled Organism Appears to Make Decisions

The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.

The unicellular species Stentor roeseli performs a form of sequential decision-making to avoid irritating stimuli.

natural history
Slideshow: Images from <em>The World Beneath</em>
Slideshow: Images from The World Beneath
Richard Smith | Nov 5, 2019
See a world of undersea splendor through the lens of Richard Smith.
What Was Lost in the Fire that Destroyed Brazil&rsquo;s Largest Museum
What Was Lost in the Fire that Destroyed Brazil’s Largest Museum
Marcia Triunfol | Sep 4, 2018
Scientists work to help relocate colleagues who lost everything.
CT Scans Reveal New Muscles in Horseshoe Crabs
CT Scans Reveal New Muscles in Horseshoe Crabs
The Scientist Staff, The Scientist Staff | Feb 15, 2018
The chelicerates’ unique anatomical features make them useful analogs to extinct arthropods.
Image of the Day: Tardigrades!
Image of the Day: Tardigrades!
The Scientist Staff, The Scientist Staff | Feb 13, 2018
The microscopic water bears will be featured in an exhibition at the Harvard Museum of Natural History beginning Saturday, February 17.
Water Fleas, 1755
Water Fleas, 1755
Jenny Rood | Jun 1, 2015
A German naturalist trains a keen eye and a microscope on a tiny crustacean to unlock its secrets.
The Namer
The Namer
Kerry Grens | Jan 1, 2015
Carl Linnaeus's lasting impact on biological science
Aristotelian Biology
Aristotelian Biology
Armand Marie Leroi | Sep 1, 2014
The ancient Greek philosopher was the first scientist.
Tiger Hunt, 1838–1840
Tiger Hunt, 1838–1840
Jef Akst | Aug 1, 2014
Zoologist John Gould undertook a financially risky expedition to document the birds of Australia—and found some unique mammals in a perilous situation.