A weighted graph is a data structure consisting of some vertices and edges, and each edge has an associated cost of traversal. Let's suppose we want to compute the shortest distance from vertex u to every other vertex v in the graph... By Eric Jang.

Salamanders in the European Alps and elsewhere can put off developing into adults for years—or their entire lives—in certain circumstances. By Elizabeth Anne Brown.

A new study has found that testosterone and cortisol levels are associated with parental caregiving quality in fathers. The findings appear in the journal Psychoneuroendocrinology. “Father involvement in parenting is on the rise, but research on quality of caregiving in fathers is very scarce. And although the role of hormones in parents is becoming more clear in the past decade, in fathers it has hardly been investigated,” said study author Peter A. Bos of Utrecht University.

You'd think elephants would be getting cancer left and right, but they have evolved resistance. They're being studied for clues about how to treat cancer in humans.

Astronomical gap between the pay of workers and bosses exposed in report on earnings of America’s top 350 CEOs

Stasis is a way of pausing physical and chemical processes – including those of life. It could be a way for us to save the critically ill, or allow ultra-long space missions. By Peter Ray Allison.

The discovery is among the strongest evidence in the fossil record that the insects pollinated prehistoric cycads, a plant that preceded flowering plants.

Botanists have discovered a new species of orchid in Peru's central Amazonian rainforest, the country's national parks service announced Tuesday.

It’s almost as good as an Iron Man suit. By Lexy Savvides. [Autoplay]

New research suggests that soft-bodied organisms called Ediacarans may have been related to an animal of the Cambrian era

Near-death experiences are caused by changes in how the brain operates, say researchers. By Alex Therrien.

E-cigarette vapour disables important immune cells in the lung and boosts inflammation.

A new study by Thomas Curran and Andrew Hill in the journal Psychological Bulletin finds perfectionism is on the rise. The authors, both psychologists, conclude that “recent generations of young people perceive that others are more demanding of them, are more demanding of others, and are more demanding of themselves."

Cyclical natural phenomena that affect planet’s climate will amplify effect of manmade global warming, scientists warn

Laboratory tests commissioned by the Environmental Working Group (EWG) found oat cereals, oatmeal, granola, and snack bars contain traces of the herbicide

Less than 5 percent of elephants die from cancer, and researchers may have finally figured out why. According to a study from The University of Chicago, elephants produce "zombie genes" that can help protect the animal from cancer. Here's how it works: Humans and other animals carry one copy of a "master tumor suppressor" gene. Elephants have 20 copies. Scientists found that gene can trigger a "zombie gene" to come back to life with a new purpose: killing cells in damaged DNA.

Technologies and organizations should be redesigned to intermittently isolate people from each other's work for best collective performance in solving complex problems.

New research reignites a row with scientists who want to reduce salt intake to near zero

Buses emit a lot of carbon dioxide, but BYD is making our fleets cleaner.

Findings appearing in the Journal of Social and Personal Relationships show people who believe they resulted from unwanted or unplanned pregnancies tend to have more insecure relationship styles as adults. “You could have learned about your birth status from your parents or sibling, you could have heard it from someone else, or maybe you did the math and figured out your older sister was born just 10 months before you...

Avoiding insulin resistance is one of the most important things to do for your health, and vegetable oils lead to insulin resistance. So avoid them.

A new study published in the journal Lancet has indicated that we may have been demonising salt a little too much.

A team of researchers from the University of Maryland, the State University of New York and NASA's Goddard Space Flight Center has found that new global tree growth over the past 35 years has more than offset global tree cover losses. In their paper published in the journal Nature, the group describes using satellite data to track forest growth and loss over the past 35 years and what they found by doing so.

In the past century, many Americans have lost the ability to sit in a way that doesn't strain their backs. Specialists say we could take a lesson from excellent sitters from other cultures.

Forty years ago, scientists theorized a new kind of low-mass particle that could solve one of the enduring mysteries of nature: what dark matter is made of. Now a new chapter in the search for that particle has begun. This week, the Axion Dark Matter Experiment (ADMX) unveiled a new result, published in the journal Physical Review Letters, that places it in a category of one: it is the world’s first and only experiment to have achieved the necessary sensitivity...

A new study sheds light on the neural basis of dishonest behavior in psychopathic individuals. The new research has been published in Social Cognitive and Affective Neuroscience. “For many years, I have studied the neural basis of deception using a cognitive neuroscience approach,” said study author Nobuhito Abe of the Kokoro Research Center at Kyoto University.

Vaping speeds up the death of lung cells by 50 fold and could trigger lung diseases in later life, a new study suggests.

The robot told test subjects it was scared of the dark and pleaded ‘No! Please do not switch me off!’

The women say the Essure implant may have caused wide-ranging problems, including chronic pain.

Children face a lower risk of suicidal behavior if their parents are religious, according to new research published in JAMA Psychiatry. The study found that parents’ belief in the importance of religion was associated with a lower risk for suicidal behavior by their children, regardless of a child’s own beliefs.

Researchers reveal how chemicals in some vegetables can prevent bowel cancer.

Scientists have experimented with a new organic molecule that has an ability to ‘renew’ and this can be the basis of a new type of organic flow battery which has the potential to last for several decades.

Results show supporters are prejudiced, dehumanizing, and aggressive.

Only when flowering is Pilostyles visible externally, the flowers erupting from the stems of its host like a weird botanical Alien.

Gerta keller was waiting for me at the Mumbai airport so we could catch a flight to Hyderabad and go hunt rocks. “You won’t die,” she told me cheerfully as soon as I’d said hello. “I’ll bring you back.” Death was not something I’d considered as a possible consequence of traveling with Keller, a 73-year-old paleontology and geology professor at Princeton University. She looked harmless enough: thin, with a blunt bob, wearing gray nylon pants and hiking boots, and carrying an insulated ShopRite supermarket bag by way of a purse.