Freeman Dyson, Math Genius Turned Visionary Technologist, Dies at 96

The theory the paper advanced, called quantum electrodynamics, or QED, ranks among the great achievements of modern science.He imagined exploring the solar system with spaceships propelled by nuclear explosions and establishing distant colonies nourished by genetically engineered plants. Read more »

Dr. Stanley Dudrick, Who Saved Post-Surgical Patients, Dies at 84

He discovered the cause and came up with a remedy: intravenous nutrition — a technique that has saved millions of lives.“He was the developer, largely single-handedly, of total parenteral nutrition, a technique now taken for granted but a long-awaited pipe dream” when Dr. Read more »

Philip Leder, Who Helped Decipher the Genetic Code, Dies at 85

Early in his career he helped accomplish the final step in deciphering the genetic code.Harvard UniversityPhilip Leder, a biologist who helped decipher the genetic code and discovered a genetic cause of cancer, died on Feb. Read more »

Katherine Johnson, NASA Mathematician Featured in 'Hidden Figures,' Dies at 101

She was one of a group of black women mathematicians at NASA and its predecessor who were celebrated in the 2016 movie “Hidden Figures.ETThey asked Katherine Johnson for the moon, and she gave it to them. Read more »

Lawrence Tesler, Who Made Personal Computing Easier, Dies at 74

Lawrence Tesler using an Alto personal computer sometime during his tenure at Xerox in the 1970s.“He can be hailed as one of the true pioneers of many important aspects of personal computing,” Mr. Read more »

Rajendra Pachauri, 79, Dies; Led Nobel-Winning Climate Agency

As chairman of the United Nations’ climate science panel, he worked to make the risks of global warning known.”The panel’s reports have detailed the overwhelming scientific evidence in support of climate change. Read more »

George Coyne, 87, Vatican Astronomer and Galileo Defender, Dies

While seeking to reconcile science and religion, Father Coyne also vigorously supported Darwin and challenged believers in intelligent design.During Father Coyne’s tenure, the Vatican publicly acknowledged that Galileo and Darwin might have been correct. Read more »

Stanley Cohen, Nobelist, Dies at 97; Made Breakthrough on Cell Growth

Stanley Cohen in his laboratory at Vanderbilt University in Nashville in 1986 after it was announced that he would share the Nobel Prize in Medicine or Physiology.Louis in the laboratory of Viktor Hamburger, a pioneer in the study of nerve growth, Dr. Read more »

Bonnie Burstow, Psychotherapist Who Rejected Psychiatry, Dies at 74

A self-described “feminist therapist,” she was a prominent voice in the anti-psychiatry movement, contending that the field is patriarchal.As she worked with patients while completing her doctorate, she noticed a pattern that would push her into the anti-psychiatry movement. Read more »

Louis Nirenberg, ‘One of the Great Mathematicians,’ Dies at 94

The renowned mathematician Louis Nirenberg in 1982 at the Courant Institute of Mathematical Sciences at New York University, where he spent his entire academic career.His death, at NewYork-Presbyterian Hospital/Columbia University Medical Center, was announced by New York University, where Dr. Read more »

Betty Pat Gatliff, Whose Forensic Art Solved Crimes, Dies at 89

Her nephew James Gatliff said the cause was complications of a stroke.”Most of her facial reconstruction took place at her home studio in Norman, Okla. Read more »

Syd Mead, 86, Maker of Future Worlds in ‘Blade Runner’ and More, Dies

The designer Syd Mead, who worked on movies like “Blade Runner” and “Alien,” in his studio in 1986.A good Mead design looked amazing, but it also looked plausible. Read more »

Dr. Heather Ashton, 90, Dies; Helped People Quit Anxiety Drugs

Her “Ashton Manual,” published in 1999, has become a cornerstone for people all over the world dealing with benzodiazepine dependence.” Now known simply as “The Ashton Manual,” it has become a cornerstone for those looking to quit the drugs safely. Read more »

Chuck Peddle Dies at 82; His $25 Chip Helped Start the PC Age

His invention brought digital technology to a new breed of consumer devices and powered early Apple and Commodore computers.The chip he helped develop powered the first big wave of personal computers. Read more »

Jeanne Guillemin, Who Exposed Soviet Anthrax Lab, Dies at 76

After an anthrax outbreak killed scores of people in 1979, she showed how even a tiny amount of a biological warfare agent could threaten a population.Jeanne Guillemin was an expert on biological warfare and sought to expose how government programs were misusing biomedical science. Read more »

Dr. Janette Sherman, 89, Early Force in Environmental Science, Dies

A chemist by training, she took up toxicology and helped pinpoint how hazardous substances, toxic chemicals and nuclear radiation could lead to cancer, birth defects and other diseases.Their jobs, the report said, were “associated with increased amounts of chronic bronchitis, chronic obstructive lung disease, or other disabling and killing diseases. Read more »

Dr. Wayne Bardin, 85, Innovative Researcher on Birth Control, Dies

“As much as he respected basic research, Dr.Seeking a successor to Norplant, Dr. Read more »

Norman Myers Dies at 85; Sounded Early Alarm on Environment

Norman Myers, pictured in 2007, was one of the earliest experts to sound the alarm on the extinction of species.His daughter Malindi Myers said the cause was Lewy body dementia and Parkinson’s disease. Read more »

Sheldon Breiner, 82, Dies; Used Magnetism for Explorations

He developed the techniques he used to help locate sunken submarines and enormous stone heads, as well as early applications for artificial intelligence.The geophysicist Sheldon Breiner doing field work in 1964. Read more »

Victoria Braithwaite, Researcher Who Said Fish Feel Pain, Dies at 52

”While there, he ponders reports of recent scientific research demonstrating that fish can feel pain.They were written by Victoria Braithwaite, then a senior lecturer at the University of Edinburgh, who died on Sept. Read more »