laser light amplification by stimulated emission of radiation

Vaginal ‘Rejuvenation’ Treatments May Be Unsafe, the F.D.A. Says

Vaginal ‘Rejuvenation’ Treatments May Be Unsafe, the F.D.A. Says

The seven companies targeted by the F.D.A. for promoting dangerous uses of laser treatments for women included Inmode, Sciton, Alma Lasers, Thermigen, BTL Aesthetics, BTL Industries and Cynosure,
Vaginal Laser Treatments Can Cause Burns and Scarring, the F.D.A. Says

Vaginal Laser Treatments Can Cause Burns and Scarring, the F.D.A. Says

The seven companies targeted by the F.D.A. for promoting dangerous uses of laser treatments for women included Inmode, Sciton, Alma Lasers, Thermigen, BTL Aesthetics, BTL Industries and Cynosure,
Robert N. Hall, 96, Whose Inventions Are Everywhere, Is Dead

Robert N. Hall, 96, Whose Inventions Are Everywhere, Is Dead

Robert N. Hall, whose discoveries led to microwave ovens and supermarket scanners, at work at a General Electric laboratory in Niskayuna, N.Y., in the early 1960s.
Robert N. Hall, 96, Whose Inventions Are Everywhere, Is Dead

Robert N. Hall, 96, Whose Inventions Are Everywhere, Is Dead

Robert N. Hall, whose discoveries led to microwave ovens and supermarket scanners, at work at a General Electric laboratory in Niskayuna, N.Y., in the early 1960s.
Trilobites: The Cells That Eat, Regurgitate and Eat Your Tattoos Again

Trilobites: The Cells That Eat, Regurgitate and Eat Your Tattoos Again

Scientists studying tattooed mice found that macrophages — a type of immune cell — play a key role in making tattoos last more or less permanently.
Trilobites: The Cells That Eat, Regurgitate and Eat Your Tattoos Again

Trilobites: The Cells That Eat, Regurgitate and Eat Your Tattoos Again

Scientists studying tattooed mice found that macrophages — a type of immune cell — play a key role in making tattoos last more or less permanently.
Why Google’s Bosses Became ‘Unpumped’ About Uber

Why Google’s Bosses Became ‘Unpumped’ About Uber

Travis Kalanick, the former chief executive of Uber, leaving the federal courthouse in San Francisco on Wednesday. He testified that “Google was super not happy, unpumped” about Uber’s work on
In Waymo-Uber Trial, Kalanick Recalls ‘Jam Sesh’ With Rival Engineer

In Waymo-Uber Trial, Kalanick Recalls ‘Jam Sesh’ With Rival Engineer

Travis Kalanick, Uber’s former chief executive, leaving federal court in San Francisco on Tuesday after Waymo lawyers questioned him on the witness stand.
Lasers Reveal a Maya Civilization So Dense It Blew Experts’ Minds

Lasers Reveal a Maya Civilization So Dense It Blew Experts’ Minds

Tikal, home to temples and palaces, is one of the best known Maya sites in northern Guatemala.
Lasers Reveal a Maya Civilization So Dense It Blew Experts’ Minds

Lasers Reveal a Maya Civilization So Dense It Blew Experts’ Minds

Tikal, home to temples and palaces, is one of the best known Maya sites in northern Guatemala.
G.M. Acquires Strobe, Start-Up Focused on Driverless Technology

G.M. Acquires Strobe, Start-Up Focused on Driverless Technology

Mary T. Barra, chairwoman and chief executive of General Motors, last month in Shanghai. G.M. has made electric and autonomous cars an increasing focus of its strategy.
G.M. Acquires Strobe, Start-Up Focused on Driverless Technology

G.M. Acquires Strobe, Start-Up Focused on Driverless Technology

Mary T. Barra, chairwoman and chief executive of General Motors, last month in Shanghai. G.M. has made electric and autonomous cars an increasing focus of its strategy.
Nicolaas Bloembergen, Who Shared Nobel for Advances With Laser Light, Dies at 97

Nicolaas Bloembergen, Who Shared Nobel for Advances With Laser Light, Dies at 97

Nicolaas Bloembergen, center, toasting his Nobel Prize in Physics award in 1981 with his wife, Deli Bloembergen, and Paul Martin, a dean at Harvard University, in Cambridge, Mass.