Key takeaways from the fourth week of the Elizabeth Holmes trial.

A Theranos lab director emerged as key prosecution witness during testimony focused on problems with the company’s blood tests.

This Lab Charges $380 for a Covid Test. Is That What Congress Had in Mind?

Insurers say it’s price-gouging, but a law left an opening for some labs to charge any price they wished.

This Lab Charges $380 for a Covid Test. Is That What Congress Had in Mind?

Insurers say it’s price-gouging, but a law left an opening for some labs to charge any price they wished.

Biology Starts to Get a Technological Makeover

The story of Ginkgo Bioworks shows the challenges and progress in the emerging field of synthetic biology.

Biology Starts to Get a Technological Makeover

The story of Ginkgo Bioworks shows the challenges and progress in the emerging field of synthetic biology.

Intelligence Review Yields No Firm Conclusion on Origins of Coronavirus

Declassified portions of a report presented to President Biden revealed divisions among federal agencies over whether the virus came from a lab leak or emerged more naturally.

Is an Exoskeleton Suit in Your Future?

Scientists are developing devices and clothing that make running and walking easier and more enjoyable.

New Policy Aims to Help Transgender Researchers Update Names on Old Work

A group of laboratories and scientific journals is trying to simplify the process of attaching authors’ new names to their previously published papers.

‘A Wild 15 Months’: Pandemic Spurs Conversion of Offices to Labs

Flush with cash and driven by renewed interest in biotechnology, the life sciences industry is swooping in to snap up vacant office space.

A Group of Scientists Presses a Case Against the Lab Leak Theory of Covid

In a review of recent studies and comparisons to other outbreaks, a group of virologists contends that there is more evidence to support a natural spillover from animals to humans.

Inside Our Subway Tuna Sandwich Test

Sending samples to a lab was just the beginning. The reporter behind the recent investigation talks about getting deep into the science of seafood.

Opinion | Where Did the Coronavirus Come From? What We Already Know Is Troubling.

Even if the coronavirus did not emerge from a lab, the groundwork for a potential disaster had been laid for years, and learning its lessons is essential to preventing others.

Scientist Finds Early Virus Sequences That Had Been Mysteriously Deleted

By rooting through files stored on Google Cloud, a researcher says he recovered 13 early coronavirus sequences that had disappeared from a database last year.

Scientist Finds Early Virus Sequences That Had Been Mysteriously Deleted

By rooting through files stored on Google Cloud, a researcher says he recovered 13 early coronavirus sequences that had disappeared from a database last year.

Fight Over Covid’s Origins Renews Debate on Risks of Lab Work

Talk of “gain-of-function” research, a muddy category at best, brings up deep questions about how scientists should study viruses and other pathogens.

Fight Over Covid’s Origins Renews Debate on Risks of Lab Work

Talk of “gain-of-function” research, a muddy category at best, brings up deep questions about how scientists should study viruses and other pathogens.

Scientist Opens Up About His Early Email to Fauci on Virus Origins

In early 2020, Kristian Andersen wrote to Anthony Fauci about the possibility of an engineered coronavirus. His research has since dispelled those suspicions.

Opinion | U.F.O.s and the Search for Alien Life

Readers speculate about how extraterrestrial beings would view our world. Also: The Wuhan lab; the C.D.C. and mild infections.

U.S. experts press calls for China to allow deeper inquiries into the pandemic’s origins.

Suspicions have focused on the Wuhan Institute of Virology, which long gathered bat viruses and whose laboratories conducted experiments on them.

Opinion | Why the Lab Leak Theory Matters

The debate about Covid’s origins will have implications beyond the media critique.