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Astronomers Get Their Wish, and a Cosmic Crisis Gets Worse
We don’t know why the universe appears to be expanding faster than it should. New ultra-precise distance measurements have only intensified the problem.
How the Slowest Computer Programs Illuminate Math’s Fundamental Limits
The goal of the “busy beaver” game is to find the longest-running computer program. Its pursuit has surprising connections to some of the most profound questions and concepts in mathematics.
How Neutral Theory Altered Ideas About Biodiversity
The simple insight that most changes are random had a profound effect on genetics, evolution and ecology.
Physicists Nail Down the ‘Magic Number’ That Shapes the Universe
A team in Paris has made the most precise measurement yet of the fine-structure constant, killing hopes for a new force of nature.
New Fish Data Reveal How Evolutionary Bursts Create Species
In three bursts of adaptive change, one species of cichlid fish in Lake Tanganyika gave rise to hundreds.
Undergraduate Math Student Pushes Frontier of Graph Theory
At 21, Ashwin Sah has produced a body of work that senior mathematicians say is nearly unprecedented for a college student.
The Search for Dark Matter Is Dramatically Expanding
Physicists plan to leave no stone unturned, checking whether dark matter tickles different types of detectors, nudges starlight, warms planetary cores or even lodges in rocks.
Scientists Find Vital Genes Evolving in Genome’s Junkyard
Even genes essential for life can be caught in an evolutionary arms race that forces them to change or be replaced.
Physicists Pin Down Nuclear Reaction From Moments After the Big Bang
The newly-measured rate of a key nuclear fusion process from the Big Bang matches the picture of the universe 380,000 years later.