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UC San Diego professor Rob Knight is pictured in this undated photo.

San Diego Researchers Identify Possible Tool For Forensic Science

Researchers at the UC San Diego School of Medicine announced Thursday that microbes can be used to provide a relatively accurate estimate of the time of death in decomposing human bodies.

Researchers at the University of Rochester unveiled a system that uses laser projection to generate 3-D holograms.

Why Don't We Have Princess Leia Holograms Yet?

Researchers continue to chase down the sci-fi holy grail of genuine free-standing holograms — and they're getting pretty close. One obstacle: Current computing systems just aren't up to it.

Britain's Professor Stephen Hawking delivers a keynote speech as he receives the Honorary Freedom of the City of London during a ceremony at the Guildhall in the City of London, March 6, 2017.

Stephen Hawking: Trump Pushing Earth's Climate 'Over The Brink'

The renowned physicist and cosmologist says the U.S. pulling out of the Paris climate change accord could turn our planet into another Venus.

Researchers aren't sure why strong relationships in adolescence seem to pay dividends later in life, but one hypothesis is that those bonds act as a buffer against depression and insults.

Having A Best Friend In Your Teenage Years Could Benefit You For Life

Researchers have found that people with deep friendships in adolescence had less anxiety and a greater sense of self-worth in early adulthood. Close friends matter, their study found.

Peggy Girshman diving in Hawaii in the summer of 2015.

Peggy Girshman, NPR Veteran And Journalism Pioneer, Dies At 61

Girshman was a leader at many news and professional organizations, including NPR, NBC News, the National Association of Science Writers and Kaiser Health News, which she co-founded.

Natalie Arroyo is a senior "Aggie," one of 600 New York City public school students enrolled in a specialized, four-year agriculture program at John Bowne High School in Queens. She plans to become an agriculture educator after college.

The Next Generation Of Farmers Is Being Trained In New York City High Schools

At Johne Bowne High School in Queens, along with literature and math, some 600 city public school students also learn the basics of farming, wine-making, aquaculture and other skills.

Photo of a factory. FRONTLINE’s “War On The EPA” examines how Scott Pruitt went from fighting the EPA to running the agency and rolling back years of policy. The film is an investigation into the conservative political forces and causes, like climate change skepticism, that propelled Pruitt’s takeover of the EPA.

FRONTLINE: War On The EPA

Airs Wednesday, Oct. 11, 2017 at 10 p.m. on KPBS TV

Middle Palaeolithic artifacts recently excavated from Attirampakkam, an archaeological site in present-day southern India. The artifacts suggest the technique used to make them spread across the world long before researchers previously thought.

Discovery In India Suggests An Early Global Spread Of Stone Age Technology

Scientists have found stone tools in India dating back to 385,000 years ago. The sharp tools were made with a Stone Age technique thought to have originated in Africa and Europe.

The chlorine that kills germs in water can interact with sunscreen, sweat and urine to create irritating chemicals.

Another Good Reason Not To Pee In The Pool

Urine, sweat and sunscreen interact with chlorine in pools to create irritating chemicals called chloramines. Those chemicals sickened dozens of swimmers and staff at an Ohio water park.

Facebook CEO Mark Zuckerberg and his wife, Dr. Priscilla Chan, have a new goal: cure, manage or eradicate all disease by the end of this century. And they're putting up $3 billion.

What's The Prognosis For $3 Billion Zuckerberg Health Plan?

The goal of curing all diseases "in our children's lifetime" sounds a lot like hype. But is it? It's the goal of Facebook founder Mark Zuckerberg and his pediatrician wife, Priscilla Chan.

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