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Biology

cell biology

Bacterial Clones Show Surprising Individuality

September 4, 2019

Genetically identical bacteria should all be the same, but in fact, the cells are stubbornly varied individuals.

3D illustration of three human skulls, split into left and right halves and nested one inside the next.
evolution

Fossil DNA Reveals New Twists in Modern Human Origins

August 29, 2019

Modern humans and more ancient hominins interbred many times throughout Eurasia and Africa, and the genetic flow went both ways.

Root glowing green against black background. Small spheres and threadlike filaments surround it.
ecology

Soil’s Microbial Market Shows the Ruthless Side of Forests

August 27, 2019

In the “underground economy” for soil nutrients, fungi strike hard bargains and punish plants that won’t meet their price.

An illustration of eyeballs connected to many hands painting the Mona Lisa.
mathematical biology

A Mathematical Model Unlocks the Secrets of Vision

August 21, 2019

Mathematicians and neuroscientists have created the first anatomically accurate model that explains how vision is possible.

Abstractions blog

Can New Species Evolve From Cancers? Maybe. Here’s How.

August 19, 2019

Researchers agree it’s a long shot, but transmissible cancers could theoretically evolve into independent species. Certain weird parasites might be living proof.

An illustration of a machine with two mechanical arms sorts cells by size into processing lines marked “Asymmetric Division” and “Symmetric Division.”
developmental biology

For Embryo’s Cells, Size Can Determine Fate

August 12, 2019

Modeling suggests that many embryonic cells commit to a developmental fate when they become too small to divide unevenly anymore.

Abstractions blog

In Brain’s Electrical Ripples, Markers for Memories Appear

August 6, 2019

Researchers found that elongating certain brain signals in rats improved their memory. The work revealed a new property to look out for in the hunt for “biomarkers” of learning.

VIDEO OPENER: TIME-LAPSE OF FLOWER OPENING.
botany

Unexpected ‘Germline’ Plant Cells May Shield New Generations

August 5, 2019

To avoid passing on new mutations to offspring, plants may minimize the number of divisions by the stem cells that make flowers and seeds.

Q&A

His Artificial Intelligence Sees Inside Living Cells

July 24, 2019

The computer vision scientist Greg Johnson is building systems that can recognize organelles on sight and show the dynamics of living cells more clearly than microscopy can.