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Q&A

Concerns of an Artificial Intelligence Pioneer

Computer scientist Stuart Russell wants to ensure that our increasingly intelligent machines remain aligned with human values.

Q&A

After Prime Proof, an Unlikely Star Rises

Two years ago, Yitang Zhang was virtually unknown. Now his surprise solution to a major problem in number theory has catapulted him to mathematical stardom. Where does he go from here?

Q&A

Science’s Path From Myth to Multiverse

In his latest book, the Nobel Prize winner Steven Weinberg explores how science made the modern world, and where it might take us from here.

Q&A

Quantum Computing Without Qubits

A quantum computing pioneer explains why the near future of quantum computation may lie in simulators, not general-purpose quantum machines.

Blanco telescope.
Q&A

Finding Dark Energy in the Details

The astrophysicist Joshua Frieman seeks to pinpoint the mysterious substance driving the accelerating expansion of the universe.

Katherine Freese
Q&A

In Search of Dark Stars

Katherine Freese, a physicist who will soon lead the Nordic Institute for Theoretical Physics, reflects on the hunt for dark matter and how dark matter heating may have produced the first stars.

David Spergel
Q&A

A Bold Critic of the Big Bang’s ‘Smoking Gun’

The cosmologist David Spergel explains why a widely publicized gravitational-wave discovery could be wrong, and how the “overreaching” study could affect the public’s perception of science.

Q&A

Early-Universe Explorer Looks for Answers

Chao-Lin Kuo, who helped design the experiment that claimed to have found evidence of gravitational waves from the Big Bang, isn’t bothered by criticism that cosmic dust may account for his results.

Q&A

A ‘Rebel’ Without a Ph.D.

A conversation with the mathematical physicist Freeman Dyson on quantum electrodynamics, climate change and his latest pet project.