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evolution

Illustration for "Mathematics Shows How to Ensure Evolution"
mathematical biology

Mathematics Shows How to Ensure Evolution

June 26, 2018

New results emerging from graph theory prove that the way a population is organized can guarantee the eventual triumph of natural selection — or permanently thwart it.

Photo of a grasshopper poised to jump.
biophysics

Too Small for Big Muscles, Tiny Animals Use Springs

June 13, 2018

Elastic springs help tiny animals stay fast and strong. New work is finding what size critters must be to benefit from the springs.

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geophysics

Why Earth’s Cracked Crust May Be Essential for Life

June 7, 2018

Life needs more than water alone. Recent discoveries suggest that plate tectonics has played a critical role in nourishing life on Earth. The findings carry major consequences for the search for life elsewhere in the universe.

Lede photo for "How Vaccines Can Drive Pathogens to Evolve"
immunology

Vaccines Are Pushing Pathogens to Evolve

May 10, 2018

Just as antibiotics have bred resistance in bacteria, vaccines can potentially lose their effectiveness over diseases they controlled. Researchers are working to head off the evolution of new threats.

Lede art for Embryo Development
developmental biology

Scientists Map the Genetic Steps as Eggs Become Animals

April 26, 2018

For the first time, researchers have traced the genetic programs that guide the development of each cell in early embryos. Surprisingly, even cells that start out different can end up the same.

Lede art for "Chronological Clues to Life’s Early History Hide in Gene Transfers"
Abstractions blog

Chronological Clues to Life’s Early History Lurk in Gene Transfers

April 24, 2018

To date the branches on the evolutionary tree of life, researchers are looking at horizontal gene transfers among ancient microorganisms, which once seemed only to muddle the record.

Photo of ants holding larvae.
evolution

The Elusive Calculus of Insects’ Altruism and Kin Selection

April 10, 2018

How the ultra-cooperative behavior of ants, bees and other social insects could have evolved continues to challenge formal analysis. But a new theory about hedging bets against nature’s unpredictability may change the math and shift the debate.

Abstractions blog

Complex Animals Led to More Oxygen, Says Maverick Theory

March 21, 2018

For decades, researchers have commonly assumed that higher oxygen levels led to the sudden diversification of animal life 540 million years ago. But one iconoclast argues the opposite: that new animal behaviors raised oxygen levels and remade the environment.

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evolution

Oxygen and Stem Cells May Have Reshaped Early Complex Animals

March 7, 2018

An unlikely team offers a controversial hypothesis about what enabled animal life to get more complex during the Cambrian explosion.