Image of an abstract fractal blue and green sea shell.
Cell Chirality Offers Clues to the Mystery of Body Asymmetry
Researchers explore the idea that molecular patterns in individual cells could underlie the development of a left and a right in animals.
Cell Chirality Offers Clues to the Mystery of Body Asymmetry
Cell Chirality Offers Clues to the Mystery of Body Asymmetry

Researchers explore the idea that molecular patterns in individual cells could underlie the development of a left and a right in animals.

Researchers explore the idea that molecular patterns in individual cells could underlie the development of a left and a right in animals.

handedness
Illustration of fibers in a cell twisting
Infographic: The Emergence of Chirality in the Cell Cytoskeleton
Catherine Offord | Feb 1, 2022
Researchers use imaging to show how actin fibers tilt and then swirl to create left-right asymmetry in the cell.
Smell May Be Possible Without Olfactory Bulbs
Jef Akst | Nov 6, 2019
A study identifies five women who have a functioning sense of smell despite an apparent lack of olfactory bulbs—the region of the brain that processes odors.
Like Humans, Walruses and Bats Cuddle Infants on Their Left Sides
Katarina Zimmer | Jan 10, 2018
These mothers and babies keep each other in their left visual fields during maternal care, which aids right-hemisphere processing. 
Special Delivery
Mary Beth Aberlin | Oct 1, 2015
Neurons in new brains and old
Lefties, Language, and Lateralization
Bob Grant | Oct 1, 2015
The long-sought genetic link between handedness and language lateralization patterns in the brain is turning out to be illusory.
Roos Are Mainly South Paws
Bob Grant | Jun 22, 2015
A new study shows that kangaroos are predominantly left-handed.
The Handedness of Cells
Kerry Grens | Jun 17, 2015
Actin—the bones of the cell—has a preference for swirling into a counterclockwise pattern.
2014’s Best in Multimedia
Bob Grant | Dec 27, 2014
The Scientist’s standout videos and slideshows of the year
Head Scratchers
Mary Beth Aberlin | Sep 1, 2014
Many natural phenomena elude our understanding.
On the Other Hand
Bob Grant | Sep 1, 2014
Handedness, a conspicuous but enigmatic human trait, may be shared by other animals. What does it mean for evolution and brain function?
TS Live: Handy Apes
Bob Grant | Aug 31, 2014
Studying handedness in chimps may shed light on the mysterious trait in humans.