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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.

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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.

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evolution

Scientists Debate the Origin of Cell Types in the First Animals

July 17, 2019

Theories about how animals became multicellular are shifting as researchers find greater complexity in our single-celled ancestors.

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planetary science

Wandering Space Rocks Help Solve Mysteries of Planet Formation

July 16, 2019

After an interstellar asteroid shot past the sun, scientists realized that there’s probably a lot of itinerant rocks out there.

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geometry

Random Surfaces Hide an Intricate Order

July 2, 2019

Mathematicians have proved that a random process applied to a random surface will yield consistent patterns.

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artificial intelligence

Where We See Shapes, AI Sees Textures

July 1, 2019

To researchers’ surprise, deep learning vision algorithms often fail at classifying images because they mostly take cues from textures, not shapes.

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taxonomy

What’s in a Name? Taxonomy Problems Vex Biologists

June 24, 2019

Researchers struggle to incorporate ongoing evolutionary discoveries into an animal classification scheme older than Darwin.

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cell biology

Bacterial Complexity Revises Ideas About ‘Which Came First?’

June 12, 2019

Contrary to popular belief, bacteria have organelles too. Scientists are now studying them for insights into how complex cells evolved.

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genomics

Ancient DNA Yields Snapshots of Vanished Ecosystems

May 29, 2019

Surviving fragments of genetic material preserved in sediments allow scientists to see the full diversity of past life — even microbes.