Don't Bogart My Blog: Science Times: Stem Cell Treatments Flourish With Little Evidence That They Work

Plus: Why Apollo 10 Stopped Just 47,000 Feet From the Moon —

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Monday, May 13, 2019

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A doctor retrieving bone marrow from a patient at the Nura Precision Pain Management clinic in Edina, Minn. Jenn Ackerman for The New York Times

Stem Cell Treatments Flourish With Little Evidence That They Work

By DENISE GRADY AND REED ABELSON

The F.D.A. has taken an industry-friendly approach toward companies using unproven cell cocktails to treat people desperate for relief from aging or damaged joints.

JSC/NASA

Why Apollo 10 Stopped Just 47,000 Feet From the Moon

By JIM BELL

In a year when we'll celebrate Apollo 11's 50th anniversary, it's worth remembering the pathfinders who completed the same mission with one critical order: don't actually land on the moon.

• For Artemis Mission to Moon, NASA Seeks to Add Billions to Budget

• Jeff Bezos Unveils Blue Origin's Vision for Space, and a Moon Lander

In photography and film, a broken egg can be perfectly unscrambled to its original state. But in real life, quantum mechanics prevent even a single particle from reversing its own course through time.

Getty Images

For a Split Second, a Quantum Computer Made History Go Backward

By DENNIS OVERBYE

Using a quantum computer, physicists successfully reversed time for an artificial atom. You can even try it at home.

A colored scanning electron micrograph of human chromosomes. Dr. Michael Snyder of Stanford University believes that

Biophoto Associates/Science Source

In This Doctor's Office, a Physical Exam Like No Other

By CARL ZIMMER

Genetic and molecular analysis of 109 volunteers turned up hidden health problems in about half of them. Critics say the approach amounted to 'carpet-bombing' the body.

A Russia Today anchor in Moscow preparing to go on air. The network's American version, RT America, has been exaggerating the health hazards posed by 5G networks, the next, most powerful generation of cell phone connectivity.

Yuri Kadobnov/Agence France-Presse — Getty Images

Your 5G Phone Won't Hurt You. But Russia Wants You to Think Otherwise.

By WILLIAM J. BROAD

RT America, a network known for sowing disinformation, has a new alarm: the coming '5G Apocalypse.'

Ambopteryx longibrachium, a newly discovered species of scansoriopterygid dinosaur with bat-like wings, found in Liaoning Province, China.

Min Wang/Chinese Academy of Sciences

Dinosaur With Bat Wings Was More Than Legend

By LUCAS JOEL

Chinese scientists first thought it was a prehistoric bird, until chipping away at the fossil revealed surprising features.

Colored x-rays of a 61-year-old with Parkinson's disease, showing the electrodes of a deep-brain stimulator. The science of brain stimulation is moving fast, but many puzzles remain.

Zephyr/Science Source

Firing Up the Neural Symphony

By BENEDICT CAREY

Scientists are racing to treat brain disabilities with electrical stimulation. Here's a metaphor to help make sense of the progress.

The University of Iowa's Advanced Technology Building was inundated by floodwaters in June 2008. The flood damaged 22 major buildings and cost the university $750 million.

Sue Ogrocki/Associated Press

How the University of Iowa Recovered From the 'Unfathomable' Flood That Ruined It

By JOHN SCHWARTZ

In 2008, the University of Iowa suffered a devastating flood. In a changing world, what happened next has lessons that go far beyond the Hawkeye state.

Paper wasps live on every continent except Antarctica, and they have mastered transitive inference.

Jason Milich

Wasps Passed This Logic Test. Can You?

By CARA GIAIMO

The insects frequently found in your backyard appear to be the first invertebrate known to be capable of the skill of transitive inference.

A tube-eye fish. A study found it and other deep sea fishes have genes that may help them see many more blues and greens.

How Fish May See Color in the Deep Ocean's Darkness

By KAREN WEINTRAUB

HOW ARE THINGS IN YOUR PART OF THE UNIVERSE?

Send your ideas and feedback to sciencenewsletter@nytimes.com.

Climate Change

Members of the Arctic Council in Rovaniemi, Finland, on Tuesday.

Vesa Moilanen/Lehtikuva, via Reuters

U.S. Pressure Blocks Declaration on Climate Change at Arctic Talks

By SOMINI SENGUPTA

The disagreement left the Arctic Council, which was formed to help protect the region's fragile environment, unable to issue a joint declaration for the first time in its history.

Felix Condori, 31, the mayor of Llapallapani and a former fisherman, next to a boat in the dry bed that was once Bolivia's second-largest lake. He now must travel to find construction jobs as a means to make money now that the lake that defined their culture and livelihood disappeared. May 2016.

Josh Haner/The New York Times

Documenting Climate Change by Air, Land and Sea

By JOSH HANER AND JAMES ESTRIN

The New York Times photographer Josh Haner has spent the past four years capturing the effects of climate change around the world and under water.

Health

Justin Lane/EPA, via Shutterstock

Where Will Measles Break Out Next? Chicago, Los Angeles or Miami, Scientists Predict

By DONALD G. MCNEIL JR.

A new study ranks the risks in U.S. counties by the numbers of unvaccinated children and proximity to international airports. But no one predicted the outbreak in Brooklyn.

• Largest U.S. Measles Outbreak in 25 Years Surpasses 800 Cases