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animals

Close-up photo of a carpenter ant queen carrying eggs.
evolution

How Two Became One: Origins of a Mysterious Symbiosis Found

September 9, 2020

Carpenter ants need endosymbiotic bacteria to guide the early development of their embryos. New work has reconstructed how this deep partnership evolved.

Illustration of two fantastical creatures. One lifts an urn in its arms. The other lacks arms but lifts the urn on its tail.
evolution

By Losing Genes, Life Often Evolved More Complexity

September 1, 2020

Recent major surveys show that reductions in genomic complexity — including the loss of key genes — have successfully shaped the evolution of life throughout history.

Photo of emperor penguins huddling together for warmth, with two sticking their heads out
Abstractions blog

Math of the Penguins

August 17, 2020

Emperor penguins display rigorously geometric spacing and mathematical efficiency when they huddle together for warmth, which may reveal secrets to their overall health.

Illustration of a flying albatross, a swimming basking shark and the Lévy walk paths they take.
behavior

Random Search Wired Into Animals May Help Them Hunt

June 11, 2020

The nervous systems of foraging and predatory animals may prompt them to move along a special kind of random path called a Lévy walk to find food efficiently when no clues are available.

Illustration of an extremely tired person, surrounded by empty coffee cups.
sleep

Why Sleep Deprivation Kills

June 4, 2020

Going without sleep for too long kills animals but scientists haven’t known why. Newly published work suggests that the answer lies in an unexpected part of the body.

A baby lizard emerging from a transparent egg membrane.
Abstractions blog

Egg Laying or Live Birth: How Evolution Chooses

May 18, 2020

A lizard that both lays eggs and gives birth to live young is helping scientists understand how and why these forms of reproduction evolved.

Photo of Scarlett Howard, a researcher at the University of Toulouse, working with honeybees
Q&A

Secrets of Math From the Bee Whisperer

January 22, 2020

As Scarlett Howard taught honeybees to do arithmetic, they showed her how fundamental numbers might be to all brains.

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.

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.